TW200303929A - A low alloy steel and a weld joint having an excellent hydlaulic acid and sulfuric acid corrosion resistance - Google Patents

A low alloy steel and a weld joint having an excellent hydlaulic acid and sulfuric acid corrosion resistance Download PDF

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Publication number
TW200303929A
TW200303929A TW091133645A TW91133645A TW200303929A TW 200303929 A TW200303929 A TW 200303929A TW 091133645 A TW091133645 A TW 091133645A TW 91133645 A TW91133645 A TW 91133645A TW 200303929 A TW200303929 A TW 200303929A
Authority
TW
Taiwan
Prior art keywords
corrosion resistance
sulfuric acid
mass
resistance
hydrochloric acid
Prior art date
Application number
TW091133645A
Other languages
Chinese (zh)
Other versions
TW593700B (en
Inventor
Akira Usami
Shunji Sakamoto
Satoshi Nishimura
Motohiro Okushima
Takashi Kusunoki
Original Assignee
Nippon Steel Corp
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Filing date
Publication date
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Publication of TW200303929A publication Critical patent/TW200303929A/en
Application granted granted Critical
Publication of TW593700B publication Critical patent/TW593700B/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
    • B23K35/3053—Fe as the principal constituent
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/50—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for welded joints
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/004—Very low carbon steels, i.e. having a carbon content of less than 0,01%
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/005—Ferrite
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0273—Final recrystallisation annealing

Abstract

The present invention provides a low alloy steel and a weld joint having an excellent hydraulic acid and sulfuric acid corrosion resistance. Said low alloy steel comprises, in mass %, 0.001- 0.2% of C, 0.01- 2.5% of Si, 0.1- 2% of Mn, 0.1- 1% of Cu, 0.001- 1% of Mo, 0.01 - 0.2% of Sb, not more than 0.05% of P, not more than 0.05% of S, with the balance consisting of Fe and unavoidable impurities, and having a corrosion resistance index AI, of 0 or greater, and said weld joint comprises the low alloy steel and a weld metal comprising, in mass %, 0.001- 0.2% of C, 0.01- 2.5% of Si, 0.1- 2% of Mn, 0.1- 1% of Cu, 0.001- 1% of Mo, 0.01- 0.2% of Sb, not more than 0.05% of P, not more than 0.05% of S, with the balance consisting of Fe and unavoidable impurities and having a corrosion resistance index AI of 0 or greater. Note: AI/10000 = 0.0005 + 0.045 x Sb% - C% x Mo%

Description

200303929 玖、發明說明 (發明說明應牧明：發明所屬之技術領域、先前技術、内容、實施方式及圖式簡單說明） 【發^明戶斤屬之^控^糊貝域^ 技術領域 本务明係有關於一種耐酸腐I虫性優異之低合金鋼及溶 5接接頭。詳而言之，本發明係有關於一種耐鹽酸性及耐硫 酸性優異之低合金鋼及熔接接頭，即主要在鍋爐及氣體化 熔融爐之燃燒排氣氣體大氣中所產生之硫酸露點腐蝕、鹽 酸露點腐蝕產生之環境或者是接觸硫酸或鹽酸之水溶液之 環境中具有優異耐蝕性之低合金鋼及熔接接頭。 10 更洋而言之，本發明係有關於一種使用於用以使重油 、煤等化石燃料、液化天然氣等氣體燃料、都市垃圾等一 般廢棄物、木屑、纖維屑、廢油、塑膠、廢棄輪胎、醫療 廢棄物等產業廢棄物及污水污泥等燃燒之鍋爐之排煙設備 ，即，使用於煙道管道、盒體、熱交換器、t體媒氣暖爐 15 、濕式或乾式之脫硫裝置、電除塵器、抽風式風扇、旋轉 再生式空氣預熱器之筐材及傳熱基板、減溫塔、袋濾器、 煙自之低合金鋼及熔接接頭。更詳而言之，其係有關於一 種對在排煙設備所產生之硫酸及鹽酸露點腐蝕顯示優異之 耐蝕性，且亦可適用作為熔接構造，並可適用於要求嚴袼 20之冷加工丨生之熱父換管之散熱片材料或空氣預熱器之傳熱 基板、煙道之膨脹，且在經濟效益上亦優異之耐酸露點腐 蝕低合金鋼及熔接接頭，或其係有關於一種用以單獨收納 鹽酸、硫酸等或將之混合之酸洗液之鋼製電鍍酸洗槽用之 耐鹽酸腐蝕性及耐硫酸腐蝕性優異之低合金鋼及熔接接頭 200303929 玖、發明說明 〇 背景技術 火力發電廠或都市垃圾焚化施設及產業排氣物焚化施 5設之燃燒排氣氣體主要係由水份、硫磺氧化物（二氧化硫磺 、三氧化硫磺）、氣化氫、氮氧化物、氮及氧所構成。特別 疋燃燒排軋氣體中一旦含有三氧化硫磧達lppm，則排氣氣 體之露點達locrc以上，而產生所謂之硫酸露點腐蝕，而 其因應對策係使用所謂之耐硫酸露點腐钱鋼（例如特公昭 10 43-14585號公報等）或高耐蝕不鏽鋼（特開平7-316745號公 報）。 在煤焚燒火力鍋爐或一般產業廢棄物之焚燒施設之 排煙系統中，由於燃燒氣體中除了前述三氧化硫磺外，尚 含有相當量之氯化氫，故產生硫酸凝結與鹽酸凝結。又， 15硫酸露點溫度與鹽酸露點溫度依燃燒排氣氣體組成而有所 變動。通常硫酸露點溫度在1〇〇〜15〇它左右，鹽酸露點溫 度在50〜80 c左右。因此，在排煙系統中，由於在同一裝 置中也依部位或構造不同，而使通過之燃燒氣體溫度即使 大致一定，仍依壁面溫度產生硫酸露點腐蝕控制與鹽酸露 點腐蝕控制之處，故開發對耐硫酸腐蝕性與耐鹽酸腐蝕性 兩者優異之材料作為構造構件即為課題。 針對此課題，在特公昭46-34772號公報中，揭示了 有關於極低C (CS0.03質量％ )，進而添加Cu及而 提高耐硫酸性及耐鹽酸性之極低碳耐酸低合金鋼之技術。 200303929 玖、發明說明 又’在特開平9-25536號公報中，揭示了一種有關於 藉低s化以及添加Sn及/或Sb以確保耐硫露點腐蝕性， 且改善了耐鹽酸露點腐蝕性之耐硫酸露點腐蝕鋼之技術。 又，在特開平10-11〇237號公報中，揭示了 一種鋼，其係 5於極低S化（sg〇.o〇5質量％ )之含銅鋼中添加如及/或 Sb，進而為改善因添加Sn/Sb所造成之熱加工性之降低， 更添加Mo及/或β ’而使耐硫酸性與耐鹽酸性以及熱加工 性皆優異者。 然而’在特公昭46-34772號公報之技術中，由於限 10定為極低C化，故為確保強度，須添加其他高價之合金 70素’而有僅對拉伸強度未滿400N/mm 2亦可適用之空氣 加熱器之傳熱基板適用，而難以適用作為熔接構造用鋼之 問題。進一步，其詳細内容後述之，然而在該公報所揭示 之成份添加範圍中，一旦過度添加M〇，則有嚴重阻礙硫 15酸浪度在10〜40質量％之耐硫酸性之問題，且耐鹽酸性亦 因條件不同而有較特公昭43-14585號公報及S-TEN1鋼 (Cu—Sb系鋼）（新曰本製鐵股份有限公司製品目錄，耐 硫酸露點腐蝕鋼S-TEN，Cat.No.AC107，1981.6版）差之問 題。 20 ^然後，在特開平7-31647號公報等中所揭示之耐硫酸 路點腐蝕不鏽鋼由於在鹽酸露點腐蝕環境中，隨著產生露 腐蝕，亦產生因鹽化物之濃縮造成之應力腐蝕裂紋或裂 隙腐蝕，加上耐全面腐蝕性，尚須確保耐應力腐蝕裂紋性 或裂隙腐|虫性，因而，必定高合金化，而遠較低合金鋼高 200303929 玖、發明說明 價，且高強度，故耐酸性與冷加工性難以並存。 又，在特開平9-25563號公報中所揭示之鋼之耐硫酸 露點腐蝕性及耐鹽酸露點腐蝕性有與上述S-TEN1鋼之耐 鹽酸露點腐蝕性相等或在其之下之問題。 5 又，在特開平10-110237公報所揭示之鋼由於為必須 低S化者，故第1，有導致製鋼成本過度增加之問題。然 而，第2，在本發明人之研究中新發現過度低硫化如後述 會阻礙耐硫酸性。進一步，第3，若為熔接構造用鋼時， 熔接金屬亦須達成相等程度之極低S化，根據熔接施工性 10 之確保等各條件，極難以達成極低S化，故對熔接構造物 之使用，即使用作為接頭時，有難以確保接頭之耐蝕性之 問題。進一步，第4，須添加Sn及/或Sb，然而，如後述 ，多餘之Sn或Sn及/或Sb之複合添加嚴重地阻礙鋼板之 韌性，故有作為管道或煙®等之熔接構造用熱壓延鋼板則 15 不實用之問題。 依本發明人之檢討，清楚知道截至目前為止所開發之 各種耐硫酸露點腐蝕鋼中，以Cu-Sb系鋼為基本成份系之 前述S-TEN1鋼具有最優異之耐鹽酸性。 然而，燃燒氯乙烯或家庭垃圾之廢棄物焚化施設中， 20 由於因施設不同，而有排氣氣體中之氯化氫濃度達 4000ppm之情形，故強烈要求一種新之耐硫酸露點腐蝕性 鋼，其係不但可維持S-TEN1鋼之耐硫酸性，並大幅地提 高耐鹽酸性，且可製成熔接構造用鋼及冷加工性優異之冷 壓延鋼板，進而遠較耐鹽酸性優異之高耐蝕不鏽鋼經濟者 200303929 玖、發明說明 Ο 又，該等低合金鋼多用作一般熔接構造物。 通常在腐蝕環境使用熔接構造物時，若熔接部與母材 間耐餘性有差異時，則選擇性地腐餘耐餘性較差者，而使 5構造物之壽命明顯縮短。又，若選擇性地腐蝕熔接部時， 則在腐姓孔產生應力集中，而嚴重時，甚至有導致構造物 之破壞之虞。如此，在炼接構造物之利用上，無法忽略腐 蝕惡化之用途時，不僅是母材亦須充分確保熔接部之耐蝕 · 性。 〇 在煤燃燒火力或垃圾焚化施設等之煙道、煙自等排煙 α又備中，因排氣中之三氧化硫磺及氣化氫，而產生硫酸露 點腐蝕、鹽酸露點腐蝕。針對此種環境，乃使用耐硫酸露 點腐蝕鋼（例如日鐵熔接工業股份有限公司、s_ten製品 目錄、Cat.N〇.AC107、1981.6版）。熔接材料係使用軟鋼 15用之炫接材料或耐硫酸露點腐姓鋼專用之溶接材料（例如 日鐵炫接工業股份有限公$日鐵溶接材料·機器指南， # P61、ρ164、ρ·2〇8、p.291 )。 耐硫酸露點腐蝕鋼專用之熔接材料係包含以c單獨作 · ^為耐I虫凡素之材料或包含Cu心系之材料。使用該等既冑 =熔接材料而得之熔接接頭雖在專燒重油鍋爐之工廠排煙 破置所產生之硫酸露點腐蝕環境下顯示十分優異之耐蝕性 …、而在煤燃燒鍋爐或垃圾焚化之氣體化熔融施設等中由 於同¥產生硫酸露點腐蝕與鹽酸露點腐蝕，故有熔接部之 熔接金屬之耐蝕性不夠，而選擇性地腐蝕耐蝕性較母材差 10 200303929 玖、發明說明 之熔接金屬之課題。 C發明内容]| 本發明即為解決此課題而提出者，其目的在於提供一 種耐酸露點腐蝕性優異之低合金鋼及熔接接頭，詳而言之 5 ，其係提供一種耐鹽酸性及耐硫酸性優異之低合金鋼及熔 接接頭，即，其係提供一種主要在對鍋爐或氣體化熔融爐 之燃燒排氣氣體環境產生之硫酸露點腐蝕及鹽酸露點腐蝕 具有優異之耐蝕性之低合金鋼及熔接接頭。 更詳而言之，本發明係提供一種使用於用以使重油、 10煤等化石燃料、液化天然氣等氣體燃料、都市垃圾等一般 廢棄物、木屑、纖維屑、廢油、塑膠、廢棄輪胎、醫療廢 棄物等產業廢棄物及污水污泥等燃燒之鍋爐之排煙設備， 即，煙道管道、盒體、熱交換器、氣體媒氣暖爐、濕式或 乾式之脫硫裝置、電除塵器、抽風式風扇、旋轉再生式空 15軋預熱裔之筐材及傳熱基板、減溫塔、袋濾器、煙囪之低 合金鋼及熔接接頭。更詳而言之，其係提供一種對在排煙 設備所產生之硫酸及鹽酸露點腐蝕顯示優異之耐蝕性，且 亦可適用作為熔接構造，並可適用於要求嚴格之冷加工性 之熱父換管之散熱片材料或空氣預熱器之傳熱基板、煙道 20之膨脹，且經濟效益亦優異之耐酸露點腐蝕低合金鋼及熔 接接頭’或其係經濟效益地提供一種用以單獨收納鹽酸、 硫酸等或將之混合之酸洗液之鋼製電鍍酸洗槽用的耐鹽酸 腐钱性及耐硫酸腐蝕性優異之低合金鋼及熔接接頭。 本發明人詳細檢討涉及耐硫酸露點腐蝕性及耐鹽酸露 200303929 玖、發明說明 點腐蝕性之冶金因素之結果，發現於耐硫酸露點腐蝕鋼 S-TENl (Cu—Sb系鋼）在後述之耐酸腐蝕性指數AI值 在正（0以上）之範圍添加極微量之，可不致如以往 將s買限定在極低量，而可一面確保較前述S_TEN1鋼優 5異之耐硫酸露點腐蝕性，一面大幅地提高耐鹽酸露點腐蝕 性。以下，詳細敘述本發明之發明人之見解。另，以下， 成份添加量之％表示質量％ 。 迄今可了解Mo為明顯阻礙鋼及含銅低合金鋼之耐硫 · 酸性之兀素。（例如小若、諸石、室谷〔日本金屬學會昭 10和41年度大會春季大會演講概要，ρ·84 ( 1966)，寺前、 門、乙黑、轟：富士製鐵技報，17，p l〇3 ( 1968 ))。然 而，在至目刖為止之調查M〇之影響的研究中，發明人著 眼於添加量超過1% ，而就〇1%以下之M〇之微量添加 對Cu—Sb系鋼之耐鹽酸性、耐氣化物含有酸腐蝕性及耐 15硫酸性之腐蝕活動造成之影響加以詳細調查。 結果： φ 1)如第1圖所示，可了解在Cu—Sb系鋼中，在極微 罝（不到0·01% )之Mo添加上，存在财鹽酸性大幅提高 之特殊點。 . 2〇 2)進一步，同樣地由第2圖可了解，在Cu—Sb系鋼 中，藉極微量添加以往稱為對耐硫性阻礙之元素之m〇， 可知與以往所知道之知識相反，亦可提高耐硫酸性。 3)又’由第2圖可了解’一旦添加M〇超過特定量以 上，則阻礙耐硫酸性。 12 200303929 玖、發明說明 因此’將不阻礙耐硫酸性之界限之Mo的添加量（ 乂下以耐石•酸性界限Mo量」定義如下。即，Mo 以外之組成相同，而比較含有Mo之鋼與不含Mo之鋼 之耐硫s欠性，而將含有而使耐硫酸性降低時之M〇 5含有1之上限值定義為「耐硫酸性界限Mo量」。 耐硫酸性界限M〇量與鋼中之c、Sb量具有極明確 之關係’且對以下式〈1〉定義之AI值（耐硫酸及鹽酸 腐蝕性指標），滿足AI=〇。 · ΑΙ/1_0==0·00〇5 + 0·045χ Sb% - C% X Mo%〈1 10 &gt; 其中’「％」係表示「質量％」。 在本發明鋼中，如第1圖及第2圖所示，藉Mo之添 加畺耐鹽酸腐姓性可提高，添加規定量以上之過度Mo 則厭重阻礙耐硫酸腐蝕性，因而可維持其耐硫酸腐蝕性之 界限之Mo畺相當於以上述〈i〉式求出之AI為〇時之 Mo 量。 在AI &lt; 〇時，雖可維持優異之耐鹽酸性，但如迄今所 報。，反而使耐硫酸性降低，另一方面，當滿足Al^〇時 ，耐硫酸性與耐鹽酸性可一同提高。 - 第3圖係說明在C—Cu—M〇系鋼之平衡圖 中，滿足AI=0之耐硫酸性界限Mq量線與耐硫酸性之關 係者。耐硫酸性界限M〇量線之左側為滿足ΑΙ^〇之情形 ’可使耐鹽酸性與耐硫酸性一同提高。另一方面，耐硫酸 性界限Mo線之右側則為ΑΙ&lt;〇之情形，雖可維持優異之 13 200303929 玖、發明說明 耐鹽酸性，但耐硫酸性卻降低。 由AI值可知，當c量一定時，Sb之添加具有使耐硫 酸性界限Mo量增加之作用。此見解在工業上意義極大。 以下就其意義說明。 就不含Sb之Cu—Mo系鋼與Cu—Sb —m〇系鋼進行 與上述相同之檢討。結果，Cu—M。系鋼未得到如Cu — Sb-M。系鋼般優異之耐鹽酸性，M。作為耐硫酸性之阻 礙元素產生作用之耐硫酸性界限M〇量以χ = 0.0005而獲得。 1〇 帛4圖係顯示添加处之效果者，其係顯示Cu-Mo系 鋼（未添加Sb)與Cu 一 Sb—Mo系鋼（〇1%訃、〇15%汕 )之耐硫酸性界限Mo量線者。在Cu—M〇系鋼（未添加 Sb)中，c為〇·1%時，耐硫酸性界限M〇量為〇〇〇5% ( 第4圖中之1 )。因此，作為熔接構造用鋼，為確保強度， B而須前後含有C(U%時，為確保在不含⑼之&amp;—編系 鋼中具有優異之耐硫酸性及耐鹽酸性，須將管理在 〇侧以下，鋼中M〇t之工業管理幅度如第4圖之4所 示，由於為±0.02%，故工業上將M〇i管理在該範圍是極 為困難。 另一方面，在Cu—Mo_0.1% Sb系鋼中，c為 時，耐硫酸性界限M〇量得到〇.〇〇5% (第4圖中之2)， 只要有意地添加在0·05%以下即可，又，在Cu —M〇 — 0.15% Sb系鋼中，為〇1% c鋼時，耐硫酸性界限m〇量 得到0·075% (第4圖中之3 )，只要添加在〇 〇乃％以下 14 200303929 玖、發明說明 p可口此在工業鋼中可輕易地管理在之管理幅度之 ± 0.02 (第4圖中之4)之範圍内。 將就上述Cu—Mo系鋼與cu—Mo — Sb系鋼之耐硫酸 性及财鹽酸性，詳細調查而得之見解加以歸納，則： 5 1)Cu—M〇—Sb系、鋼較Cu—Mo系、鋼及Cu—Sb系鋼 具有極優異之耐鹽酸性。 2)在Cu—Mo—Sb系鋼及Cu—M〇系鋼中，將M〇添 加在某上限值之範圍内，即添加在耐硫酸性界限M〇量以 φ 下時，則以往所謂有害之Μ〇達到提高耐硫酸性之作用。 1〇 3)4硫酸性界限Μ。量之上限值可以清楚之關係顯示 鋼中C及Sb量，若為Cu — Mo—Sb系鋼時，c% Χ Μ〇% $0·0005 + 0·045χ Sb%，若為 Cu — Mo 系鋼時，c% χ Mo % S 0.0005。以此關係作為指標所表示者為前述之AI，即 ，ΑΙ/1〇〇〇〇=〇·〇〇〇5 + 〇·〇45% X 讥％ 一 c% X Mo% ，若 15 AI^〇則耐鹽酸性及耐硫酸性均極優異。 本發明人等人進一步就對使用如前述之耐鹽酸腐蝕性 · 及耐硫酸腐蝕性優異之低合金鋼作為熔接構造物之熔接接 頭之耐鹽酸腐蝕性及耐硫酸腐蝕性造成影響的冶金之主要 ， 原因加以檢討之結果，獲得以下之見解，即藉令母材為作 一200303929 发明 Description of the invention (Invention description Ying Muming: brief description of the technical field to which the invention belongs, prior art, content, implementation and drawings) The Ming Department is about a low alloy steel with excellent resistance to acid rot and insect resistance, and a 5 joint. In detail, the present invention relates to a low alloy steel and fusion joints with excellent resistance to hydrochloric acid and sulfuric acid, that is, sulfuric acid dew point corrosion mainly generated in the atmosphere of combustion exhaust gas of boilers and gasification melting furnaces, Low-alloy steel and welded joints with excellent corrosion resistance in the environment where hydrochloric acid dew point corrosion or the environment in which it is exposed to sulfuric acid or hydrochloric acid aqueous solution. 10 More specifically, the present invention relates to a kind of fuel used for making fossil fuels such as heavy oil, coal, gas fuels such as liquefied natural gas, general waste such as municipal waste, wood chips, fiber chips, waste oil, plastic, and waste tire Smoke exhaust equipment for boilers such as industrial waste, medical waste, and sewage sludge, that is, used in flue pipes, boxes, heat exchangers, t-body gas heaters15, wet or dry degassing Sulfur devices, electric precipitators, exhaust fans, baskets and heat transfer substrates for rotary regenerative air preheaters, desuperheating towers, bag filters, low-alloy steel from Yanzi and welded joints. More specifically, it relates to a kind of corrosion resistance that shows excellent dew point corrosion of sulfuric acid and hydrochloric acid generated in smoke exhaust equipment, and can also be used as a welding structure, and can be applied to cold processing that requires strict 20 Heat-exchanger material for heat-exchange tubes or heat-transfer substrates of air preheaters, flue expansion, and excellent economic benefits, acid-resistant dew-point corrosion-resistant low-alloy steels and welded joints, or related Low-alloy steel and welded joints with excellent hydrochloric acid corrosion resistance and sulfuric acid corrosion resistance for steel electroplating pickling tanks containing hydrochloric acid, sulfuric acid, etc. or mixed acid pickling liquids, 200303929 发明 Description of the invention The combustion exhaust gas of the plant or municipal waste incineration facility and industrial exhaust incineration facility 5 is mainly composed of water, sulfur oxides (sulfur dioxide, sulfur trioxide), hydrogen gas, nitrogen oxides, nitrogen and oxygen. Make up. In particular, once the sulfur exhaust gas contained in the combustion exhaust gas reaches 1 ppm, the dew point of the exhaust gas reaches above locrc, so-called sulfuric acid dew point corrosion occurs, and the so-called sulfuric acid dew point corrosion-resistant steel (such as Japanese Patent Publication No. 10 43-14585, etc.) or high corrosion-resistant stainless steel (Japanese Patent Publication No. 7-316745). In the smoke exhaust system of coal incineration thermal power boilers or incineration facilities for general industrial waste, the combustion gas contains a considerable amount of hydrogen chloride in addition to the aforementioned sulfur trioxide, so sulfuric acid condensation and hydrochloric acid condensation occur. The dew point temperature of 15 sulfuric acid and the dew point of hydrochloric acid vary depending on the composition of the combustion exhaust gas. Generally, the dew point temperature of sulfuric acid is about 100 ~ 150, and the dew point temperature of hydrochloric acid is about 50 ~ 80 c. Therefore, in the smoke exhaust system, because the same device also has different locations or structures, even if the temperature of the passing combustion gas is approximately constant, the sulfuric acid dew point corrosion control and hydrochloric acid dew point corrosion control are still generated according to the wall surface temperature. As a structural member, a material excellent in both sulfuric acid corrosion resistance and hydrochloric acid corrosion resistance is a problem. In response to this problem, Japanese Patent Publication No. 46-34772 discloses extremely low carbon and acid and low alloy steels with extremely low C (CS0.03 mass%), and further adding Cu and improving sulfuric acid resistance and hydrochloric acid resistance. Technology. 200303929 The invention description is also disclosed in Japanese Patent Application Laid-Open No. 9-25536, which discloses a method for improving sulfur dew point corrosion resistance by reducing s and adding Sn and / or Sb, and improving hydrochloric acid dew point corrosion resistance. Technology for sulfuric acid dew point corrosion resistant steel. Also, Japanese Patent Application Laid-Open No. 10-11〇237 discloses a steel in which 5 and / or Sb is added to a copper-containing steel having extremely low S content (sg. 0.05% by mass), and further, In order to improve the decrease in hot workability caused by the addition of Sn / Sb, Mo and / or β 'are further added so as to have excellent sulfuric acid resistance, hydrochloric acid resistance, and hot workability. However, in the technique of Japanese Patent Publication No. 46-34772, because the limit 10 is set to be extremely low C, in order to ensure the strength, other high-priced alloys 70 elements must be added, and only the tensile strength is less than 400N / mm. 2 The heat transfer substrate of an air heater is also applicable, but it is difficult to apply it as a steel for welding structure. Further, the details thereof will be described later. However, in the component addition range disclosed in this bulletin, once Mo is excessively added, there is a problem that the sulfur 15 acid has a sulfuric acid resistance of 10 to 40% by mass. Hydrochloric acid is also different according to the conditions of Gazette No. 43-14585 and S-TEN1 steel (Cu-Sb series steel) (product catalog of Shin-Itomoto Steel Co., Ltd., sulfur-resistant dew point corrosion-resistant steel S-TEN, Cat .No.AC107, 1981.6 version) poor problem. 20 ^ Then, the sulfuric acid-resistant point-corrosion-resistant stainless steel disclosed in JP 7-31647 and the like, due to dew-point corrosion in a hydrochloric acid dew-point corrosion environment, with the occurrence of dew corrosion, stress corrosion cracking due to salt concentration or Fissure corrosion, combined with comprehensive corrosion resistance, must also ensure stress corrosion cracking or fissure corrosion resistance. Therefore, it must be highly alloyed, and the alloy steel is much lower than 200303929 玖, the invention price, and high strength, Therefore, it is difficult to coexist acid resistance and cold workability. Further, the sulfuric acid dew point corrosion resistance and hydrochloric acid dew point corrosion resistance of steel disclosed in Japanese Patent Application Laid-Open No. 9-25563 have problems equal to or lower than the hydrochloric acid dew point corrosion resistance of the S-TEN1 steel. 5 In addition, since the steel disclosed in Japanese Patent Application Laid-Open No. 10-110237 is a material that must be reduced in S, the first problem is that the cost of steelmaking is excessively increased. However, secondly, in the study of the present inventors, it was newly discovered that excessively low sulfurization hinders sulfuric acid resistance as described later. Further, third, if it is a steel for welding structure, the welding metal must also achieve an extremely low S, and it is extremely difficult to achieve an extremely low S according to various conditions such as the welding workability of 10, so the welding structure When it is used, even when used as a joint, there is a problem that it is difficult to ensure the corrosion resistance of the joint. Furthermore, No. 4 must be added with Sn and / or Sb. However, as will be described later, the excessive addition of Sn or Sn and / or Sb is a serious hindrance to the toughness of the steel plate. Therefore, it is used as heat for welding structures such as pipes or smoke®. Rolled steel sheet 15 is not practical. According to the review by the present inventors, it is clear that among the various sulfuric acid dew point corrosion resistant steels developed so far, the aforementioned S-TEN1 steel, which uses Cu-Sb based steel as a basic component system, has the most excellent resistance to hydrochloric acid. However, in the waste incineration facility that burns vinyl chloride or household waste, the concentration of hydrogen chloride in the exhaust gas may reach 4000 ppm due to different facilities. Therefore, a new sulfuric acid dew point corrosion-resistant steel is strongly required. Not only can maintain the sulfuric acid resistance of S-TEN1 steel and greatly improve the resistance to hydrochloric acid, but also can be made into welded structural steel and cold-rolled steel sheet with excellent cold workability, and it is far better than highly corrosion-resistant stainless steel with excellent hydrochloric acid resistance. 200303929 发明 、 Explanation of the invention 〇 Moreover, these low alloy steels are mostly used as general welding structures. Generally, when a welded structure is used in a corrosive environment, if there is a difference in the residual resistance between the welded portion and the base material, the poor residual resistance is selectively eroded, and the life of the structure is significantly shortened. In addition, if the welded portion is selectively corroded, stress concentration occurs in the rotten hole, and in severe cases, the structure may be damaged. In this way, in the use of the welded structure, the use of corrosion deterioration cannot be ignored, and not only the base material, but also the corrosion resistance of the welded portion must be sufficiently ensured. 〇 In the flue gas and smoke exhaust of the coal combustion firepower or garbage incineration facilities, etc. are being prepared, sulfuric acid dew point corrosion and hydrochloric acid dew point corrosion occur due to sulfur trioxide and hydrogen gas in the exhaust gas. For this type of environment, sulfur-resistant dew-point corrosion-resistant steels are used (for example, Nippon Steel Welding Industry Co., Ltd., s_ten Products Catalog, Cat. No. AC107, 1981.6 version). Welding materials are welding materials for mild steel 15 or sulfur-free dew-point-resistant steel (for example, Nippon Steel Hyun Industries Co., Ltd. Nippon Steel Welding Materials · Guide to Machines, # P61, ρ164, ρ · 2〇 8, p.291). Welding materials for sulfuric acid-resistant dew-point corrosion-resistant steels are made of c alone. ^ Is a material that is resistant to wormworms or materials that contain Cu cores. Although the welded joints obtained from the use of these welding materials have shown excellent corrosion resistance in the sulfuric acid dew point corrosion environment produced by the smoke exhaust of a factory that specializes in burning heavy oil boilers ... In gasification melting installations, due to the simultaneous occurrence of sulfuric acid dew point corrosion and hydrochloric acid dew point corrosion, the corrosion resistance of welded metals with welded parts is not enough, and the selective corrosion resistance is worse than that of the base metal. 10 200303929 Subject. C Summary of the invention] | The present invention has been proposed to solve this problem, and its object is to provide a low alloy steel and a welded joint with excellent acid dew point corrosion resistance. Specifically, 5 provides a type of resistance to hydrochloric acid and sulfuric acid. Low-alloy steel and welded joints with excellent properties, that is, low-alloy steels and sulfuric acid dew-point corrosion and hydrochloric acid dew-point corrosion mainly produced in the combustion exhaust gas environment of boilers or gasification melting furnaces, and low-alloy steels and Welded joints. More specifically, the present invention provides a method for making heavy oil, fossil fuels such as 10 coal, gas fuels such as liquefied natural gas, general waste such as municipal waste, wood chips, fiber chips, waste oil, plastic, waste tires, Smoke exhaust equipment for industrial waste such as medical waste and sewage sludge burning boilers, that is, flue pipes, boxes, heat exchangers, gas-fired gas heaters, wet or dry desulfurization devices, and electric dust removal Device, exhaust fan, rotary regenerative air-rolled 15-layer preheated basket material and heat transfer substrate, temperature reduction tower, bag filter, chimney low alloy steel and welded joint. More specifically, it provides a corrosion resistance that exhibits excellent dew point corrosion of sulfuric acid and hydrochloric acid generated in smoke exhaust equipment. It can also be used as a welding structure and can be used for hot-replacement with strict cold workability. The heat sink material of the tube or the heat transfer substrate of the air preheater, the expansion of the flue 20, and the excellent economic benefits of the acid-resistant dew-point corrosion-resistant low-alloy steel and welded joints' or its economic benefits provide a method for separately containing hydrochloric acid , Low-alloy steel and welded joints with excellent corrosion resistance to hydrochloric acid and sulfuric acid, such as sulfuric acid, sulfuric acid, or mixed acid pickling solution for steel electroplating and pickling tanks. The inventors conducted a detailed review of the metallurgical factors related to sulfuric acid dew point corrosion resistance and hydrochloric acid dew 200303929. The invention explained the point corrosion resistance of metallurgical factors, and found that the sulfuric acid dew point corrosion resistance steel S-TENl (Cu-Sb series steel) has acid resistance described later Corrosion index AI value is in the range of positive (above 0). Adding a very small amount can not limit the s buy to a very low amount as in the past, but can ensure the sulfuric acid dew point corrosion resistance that is 5 times better than the aforementioned S_TEN1 steel. Significantly improved resistance to hydrochloric acid dew point corrosion. Hereinafter, the findings of the inventors of the present invention will be described in detail. In addition, below, the percentage of the component addition amount means mass%. So far, Mo can be understood to be a significant barrier to sulfur and acid resistance of steel and copper-containing low alloy steel. (For example, Xiao Ruo, Zhu Shi, Murutani [Summary of Lectures of the 10th and 41st Annual Meetings of the Japanese Society of Metal Research, ρ 84 (1966), Teraima, Mon, Otoro, and Hiroshi: Fuji Steel Technical Bulletin, 17, pl03 (1968)). However, in the research to investigate the effect of M0 until the end of the project, the inventors focused on the addition of more than 1%, and the hydrochloric acid resistance to Cu—Sb-based steel was added to the trace amount of M0 below 0%, The effect of corrosive activity including gas corrosion resistance and 15 sulfuric acid resistance is investigated in detail. Results: φ 1) As shown in Figure 1, it can be seen that in Cu—Sb-based steels, there is a special point that the property of hydrochloric acid is greatly improved in the addition of Mo in extremely small amounts (less than 0.01%). 2〇2) Further, as can be understood from FIG. 2, in Cu—Sb-based steel, by adding a very small amount of m0, which was previously called an element that inhibits sulfur resistance, it can be seen that it is contrary to conventional knowledge. , Can also improve sulfuric acid resistance. 3) It is also understood from Fig. 2 that when Mo is added to a specific amount or more, the sulfuric acid resistance is hindered. 12 200303929 发明 、 Explanation of the invention Therefore, 'the amount of Mo added which does not hinder the limit of sulfuric acid resistance (hereafter, the amount of Mo that is resistant to stone and acidity limit' is defined as follows. That is, the composition other than Mo is the same, and steel containing Mo is compared It is inferior to the sulfur resistance of Mo-free steel, and the upper limit of M05 content 1 when it is included to reduce sulfuric acid resistance is defined as the "sulfuric acid resistance limit Mo amount." The amount has a very clear relationship with the amount of c and Sb in the steel 'and the AI value (corrosion resistance index of sulfuric acid and hydrochloric acid) defined by the following formula <1> satisfies AI = 〇. · ΑΙ / 1_0 == 0 · 00 〇5 + 0 · 045χ Sb%-C% X Mo% <1 10 &gt; where ""% "means" mass% ". In the steel of the present invention, as shown in Fig. 1 and Fig. 2, Mo The addition of 畺 can improve the resistance to hydrochloric acid rot, and the addition of excessive Mo above a predetermined amount will obstruct the resistance to sulfuric acid corrosion. Therefore, the Mo that can maintain the limit of sulfuric acid corrosion resistance is equivalent to the above formula (i). The AI is the amount of Mo at 0. At AI &lt; 0, although excellent hydrochloric acid resistance can be maintained, as reported so far, it makes the Sulfuric acid is reduced. On the other hand, when Al ^ 〇 is satisfied, the sulfuric acid resistance and the hydrochloric acid resistance can be improved together.-Figure 3 shows that in the equilibrium diagram of C-Cu-M〇 steel, AI = 0 is satisfied. The relationship between the sulfuric acid resistance limit Mq quantity line and sulfuric acid resistance. The left side of the sulfuric acid resistance limit M0 quantity line satisfies A1 ^ 〇 ', which can improve hydrochloric acid resistance and sulfuric acid resistance. On the other hand, The right side of the sulfuric acid resistance limit Mo line is Α1 &lt; 〇, although it can maintain excellent 13 200303929 玖, the invention shows that hydrochloric acid resistance, but sulfuric acid resistance decreases. From the AI value, it can be seen that when the amount of c is constant, Sb The addition has the effect of increasing the amount of Mo in the sulfuric acid resistance limit. This insight is of great industrial significance. The meaning is explained below. The Cu-Mo-based steel and Cu-Sb-m0-based steel that do not contain Sb are compared with the above. The same review. As a result, Cu—M. Steels did not have excellent hydrochloric acid resistance as Cu—Sb-M. Steels. M. The sulfuric acid resistance limit M0, which acts as an inhibitor of sulfuric acid resistance, is less than χ = 0.0005. 1〇4 The figure shows the effect of the addition It shows the Mo content line of the sulfuric acid resistance limit of Cu-Mo steel (without Sb added) and Cu-Sb-Mo steel (〇1% 讣, 015% Shan). In Cu-Mo steel ( In the case where Sb) is not added, when c is 0.1%, the sulfuric acid resistance limit Mo is 0.005% (1 in FIG. 4). Therefore, as a steel for welding structure, in order to ensure the strength, B is C (U%) must be included before and after, in order to ensure excellent sulfuric acid and hydrochloric acid resistance in &amp; -knitting steels that do not contain rhenium, the management must be below the 0 side, and the industrial management of Mot in steel As shown in Figure 4-4, the range is ± 0.02%, so it is extremely difficult to manage Moi in this range. On the other hand, in Cu—Mo_0.1% Sb-based steel, when c is, the amount of sulfuric acid resistance limit Mo is 0.005% (2 in FIG. 4), as long as it is intentionally added at 0 · It may be less than 05%, and in Cu—M0—0.15% Sb-based steel, when the steel is 0% c steel, the sulfuric acid resistance limit m0 amount is 0.075% (3 in FIG. 4), As long as it is added below 〇〇 ％% 14 200303929 发明, invention description p delicious This can be easily managed within the range of ± 0.02 (4 in the fourth figure) in industrial steel. Summarizing the results of detailed investigations on the sulfuric acid resistance and hydrochloric acid resistance of the above Cu-Mo-based steels and cu-Mo-Sb-based steels, 5 1) —Mo-based, steel, and Cu—Sb-based steels have excellent resistance to hydrochloric acid. 2) In Cu-Mo-Sb-based steels and Cu-M0-based steels, when M0 is added within a certain upper limit range, that is, when the amount of sulfuric acid resistance limit M0 is less than φ, it has been conventionally called Harmful Mo achieves the effect of improving sulfuric acid resistance. 103) 4 sulfuric acid limit M. The upper limit of the amount can clearly show the amount of C and Sb in the steel. If it is Cu—Mo—Sb system steel, c% χ Μ〇% $ 0 · 0005 + 0 · 045χ Sb%, if it is Cu—Mo system For steel, c% χ Mo% S 0.0005. This relationship is used as an indicator to represent the aforementioned AI, that is, AI / 1〇00〇〇 = 〇〇〇〇〇 05 + 〇 〇 45% X 讥%-c% X Mo%, if 15 AI ^ 〇 Both the hydrochloric acid resistance and the sulfuric acid resistance are extremely excellent. The present inventors have further described the main metallurgy that affects the hydrochloric acid corrosion resistance and sulfuric acid corrosion resistance of welded joints using low-alloy steel with excellent corrosion resistance and sulfuric acid corrosion resistance as the welding structure as described above. As a result of reviewing the reasons, I obtained the following insights, which is to make the parent material as one

為如則述之組成之低合金鋼，並依提高母材之耐鹽酸腐餘 性及耐硫酸腐蝕性之知識，令熔接金屬為特定之組成，即 猎1)令炼接金屬之組成為Cu — Mo — Sb系，2)令Ai值為 特定範圍，可獲得耐鹽酸腐蝕性及耐硫酸腐蝕性優異之炫 接接頭。又，更佳者為藉令母材之AI值與熔接金屬之AI 15 200303929 玖、發明說明 值之差為特定範圍，可獲得更優異之熔接接頭。 本發明即為依上述見解而提出者，其要旨如下。 (1 ) 一種耐鹽酸腐蝕性及耐硫酸腐蝕性優異之低 合金鋼，其特徵在於： 5 以質量％計含有： C : 0.001 〜0.2% ;For the low-alloy steel with the composition described above, and based on the knowledge of improving the base metal's resistance to hydrochloric acid residue and sulfuric acid corrosion, the weld metal is a specific composition, that is, hunting 1) Let the composition of the weld metal be Cu — Mo — Sb series, 2) By setting the Ai value to a specific range, a brilliant joint with excellent corrosion resistance against hydrochloric acid and sulfuric acid can be obtained. In addition, the better one is to make the difference between the AI value of the base metal and the AI 15 200303929 of the weld metal, and the value of the invention description in a specific range, to obtain a more excellent weld joint. This invention is made | formed based on the said knowledge, The summary is as follows. (1) A low-alloy steel excellent in hydrochloric acid corrosion resistance and sulfuric acid corrosion resistance, characterized in that: 5 contains in mass%: C: 0.001 to 0.2%;

Si : 0.01 〜2.5% ；Si: 0.01 to 2.5%;

Mn :0.1 〜2% ；Mn: 0.1 ~ 2%;

Cu : 0.1 〜1% ； 10 Mo : 0.001 〜1〇/0 ;Cu: 0.1 ~ 1%; 10 Mo: 0.001 ~ 1〇 / 0;

Sb : 〇·〇1 〜0.2% % ； Ρ : 0.05% 以下； S ·· 0.05% 以下； 而剩餘部份由Fe及不可避免之雜質構成，且，以下述 15 〈 1〉式求得之耐酸腐蝕性指數AI在0以上。Sb: 〇 · 〇1 ～ 0.2 %%; P: 0.05% or less; S ·· 0.05% or less; and the remaining portion is composed of Fe and unavoidable impurities, and the acid resistance obtained by the following formula 15 <1> Corrosion index AI is above 0.

AI/l〇〇〇〇= 0.0005+ 〇.〇45x Sb% ~C°/〇 x Mo°/〇 (i) 另，上述「％」係表示「質量％」。 (2 ) —種耐鹽酸腐#性及耐硫酸腐餘性優異之低 合金鋼，其特徵在於： 2〇 以質量％計含有： C : 0.001 〜0.2% ;AI / l00〇〇〇 = 0.0005+ 〇45 × Sb% ~ C ° / 〇 x Mo ° / 〇 (i) The above "%" means "mass%". (2) — a kind of low-alloy steel with excellent resistance to hydrochloric acid corrosion # and sulfuric acid corrosion resistance, characterized in that: 20% by mass: C: 0.001 to 0.2%;

Si : 〇.〇1 〜2.5% ； Μη : 0.1 〜2% ；Si: 〇.〇1 ~ 2.5%; Μη: 0.1 ~ 2%;

Cu : 0.1 〜1% ； 16 200303929 玫、發明說明Cu: 0.1 ~ 1%; 16 200303929 Rose, description of the invention

Mo ·· 0.001 〜1% ；Mo ·· 0.001 to 1%;

Sb ·· 0.01 〜〇·20/〇 0/〇 ; Ρ : 0.05% 以下； S : 0.05% 以下； 5 更含有：Sb ·· 0.01 to 〇 · 20 / 〇 0 / 〇; P: 0.05% or less; S: 0.05% or less; 5 contains:

Nb ·· 0.005〜0.1% ;Nb 0.005 ~ 0.1%;

Ta : 0.005〜0.1% ；Ta: 0.005 ~ 0.1%;

V : 0.005〜0.1% ;V: 0.005 ~ 0.1%;

Ti ： 0.005-0.1% ; 10 w : 0.05〜1%中之1種或2種以上； 而剩餘部份由Fe及不可避免之雜質構成，且，以下述 〈2〉式求得之耐酸腐蝕性指數EI在〇以上。 EI/10000- 0.0005+ 0.045x Sb°/〇 - C% x Moeq% (1&gt; 另，上述「％」係表示「質量％」； 15 上述 Moeq(質量％ )係表示 Moeq = Mo+5.1x (Nb% +TaTi: 0.005-0.1%; 10 w: one or more of 0.05 to 1%; and the remaining portion is composed of Fe and unavoidable impurities, and the acid corrosion resistance obtained by the following <2> formula The index EI is above 0. EI / 10000- 0.0005+ 0.045x Sb ° / 〇- C% x Moeq% (1 &gt; The above "%" means "mass%"; 15 The above Moeq (mass%) means Moeq = Mo + 5.1x ( Nb% + Ta

% ) + 4·2χ V% +9·3χ Ti% +〇·5χ W。 (3)在（1)記載之耐鹽酸腐蝕性及耐硫酸腐蝕性 優異之低合金鋼中，以質量％計，含有s : 〇〇〇5超過 〜0.025% 〇 2〇 ( 4 )在（2 )記載之耐鹽酸腐蝕性及耐硫酸腐蝕性 優異之低合金鋼中，以質量％計，含有s : 〇〇〇5超過 〜0.025% 〇 (5)在（丨）〜(4)任一項記載之耐鹽酸腐蝕性及耐 石瓜@文腐#性優異之低合金鋼中，以質量％計，更含有： 17 200303929 玖、發明說明%) + 4 · 2χ V% + 9 · 3χ Ti% + 0.5χ W. (3) The low-alloy steel excellent in hydrochloric acid corrosion resistance and sulfuric acid corrosion resistance according to (1), in terms of mass%, contains s: 0.0005 in excess of ~ 0.025% and 0.02 (4) in (2 The low-alloy steel excellent in hydrochloric acid corrosion resistance and sulfuric acid corrosion resistance described in the above) contains, in mass%, s: 005: more than 0.025%. (5) Any one of (丨) to (4) The recorded low-alloy steel with excellent hydrochloric acid corrosion resistance and resistance to stone melon @ 文 腐 #, in terms of mass%, further contains: 17 200303929 发明, description of the invention

Cr : (U〜0.5% ；Cr: (U ~ 0.5%;

Ni : 0.1 〜10/〇 ； N : 0.001 〜0.07% ； A1 : 0.005〜0.1% ； 5 Ca : 0.0002〜0.01% ;Ni: 0.1 to 10 / 〇; N: 0.001 to 0.07%; A1: 0.005 to 0.1%; 5 Ca: 0.0002 to 0.01%;

Mg : 0.0002〜0.01% ; REM : 0.0002〜0.01% ; B : 0.0002〜0.005% ;Mg: 0.0002 ~ 0.01%; REM: 0.0002 ~ 0.01%; B: 0.0002 ~ 0.005%;

La : 0.0002〜0·0”/〇 ; 10 Ce ： 0.0002^0.01% ；La: 0.0002 ~ 0 · 0 "/ 〇; 10 Ce: 0.0002 ^ 0.01%;

Sn : 0.01 〜0.30/〇 ；Sn: 0.01 to 0.30 / 〇;

Pb : 0.01 〜0.3% ；Pb: 0.01 to 0.3%;

Se : 0.001 〜0.1% ；Se: 0.001 to 0.1%;

Te : 0.001 〜〇·1% ；Te: 0.001 ~ 〇 · 1%;

Bi : 0.001 〜〇.1〇/0 ;Bi: 0.001 to 0.10 / 0;

Ag : 0.001 〜0.5% ；Ag: 0.001 to 0.5%;

Pd :〇.〇〇1〜0.1%中之1種或2種以上。 (6) —種耐鹽酸腐蝕性及耐硫酸腐蝕性優異之低合 金鋼之熔接接頭，其特徵在於：其係由母材及熔接金屬構 20 成，該母材係以質量％計含有： C : 0.001 〜〇·20/0 ;Pd: One or more of 0.001 to 0.1%. (6) A welded joint of low alloy steel with excellent resistance to hydrochloric acid and sulfuric acid, characterized in that it is composed of a base material and a welded metal of 20, and the base material contains in mass%: C : 0.001 ~ 〇 · 20/0;

Si : 〇.〇1 〜2.5% ； Μη ·· 〇，1 〜2% ；Si: 〇.〇1 ~ 2.5%; Μη ·· 〇, 1 ~ 2%;

Cu : 0.1 〜1% ; 200303929 玖、發明說明Cu: 0.1 ~ 1%; 200303929 玖 、 Explanation of the invention

Mo ： 0.001^1% ；Mo: 0.001 ^ 1%;

Sb : 〇·〇1 〜〇.20/0 ； P : 0.05% 以下； S : 0.05% 以下； 5而剩餘部份由Fe及不可避免之雜質構成者；該熔接金屬 係以質量％計含有： C : 0.005〜0.2% ;Sb: 〇 · 〇1 ～ 〇.20 / 0; P: 0.05% or less; S: 0.05% or less; 5 and the remainder is composed of Fe and unavoidable impurities; the weld metal is contained in mass%: C: 0.005 ~ 0.2%;

Si : 0.01 〜2.5% ； Μη : 0.1 〜2〇/〇 ； 10 Cu ·· 0.1 〜1% ;Si: 0.01 to 2.5%; Μη: 0.1 to 2〇 / 〇; 10 Cu ·· 0.1 to 1%;

Mo : 0.001 〜0.5% ；Mo: 0.001 to 0.5%;

Sb : 0.01 〜〇_20/0 ； P : 0.03% 以下； S : 0.03% 以下； 15而剩餘部份由Fe及不可避免之雜質構成者；且，前述母 材及熔接金屬之以下述〈；〇式求得之耐酸腐蝕性指數Μ 在0以上。 AI/10000= 0.0005+ 0.045x Sb% - C% x Mo% &lt;ΐ) 另’上述「％」係表示「質量％」。 2〇 ⑺在⑹記載之耐鹽酸腐餘性及耐硫酸腐餘性優異 之低合金鋼之溶接接頭中，前述母材與溶接金屬之耐酸腐 蝕性指數ΑΙ之差分絕對值I ΔΑΙΙ在20以下。 (8)在（6)記載之耐鹽酸腐㈣及耐_腐姓性優 異之低合金鋼之熔接接頭φ， 设按頌中，刖述母材以質量％計含有s 19 200303929 玖、發明說明 :0.005超過〜0.025% ，而前述熔接金屬以質量％計含有 S : 0.005 超過〜0.02% 。 (9)在（7)記載之耐鹽酸腐姓性及耐硫酸腐姓性優 異之低合金鋼之炫接接頭中，前述母材以質量％計含有s 5 : 0·005超過〜0.025% ，而前述熔接金屬以質量％計含有 S ·· 0.005 超過〜0.02% 。 (10 )在（6 )記載之耐鹽酸腐蝕性及耐硫酸腐蝕性 優異之低合金鋼之熔接接頭中，前述母材以質量％計更含 · 有N : 0.001〜0.007% ，而前述熔接金屬以質量％計更含有 10 N ·· 0.001 〜0.02% 。 (11)在（7)記載之耐鹽酸腐蝕性及耐硫酸腐蝕性 優異之低合金鋼之溶接接頭中，前述母材以質量％計更含 有N : 0.001〜0.007% ，而前述熔接金屬以質量％計更含有 N : 0.001 〜0.02% 。 15 ( 12)在（8)記載之耐鹽酸腐蝕性及耐硫酸腐蝕性 優異之低合金鋼之熔接接頭中，前述母材以質量％計更含 · 有N · 0.001〜0.007% ，而前述溶接金屬以質量％計更含有 N ： 0.001^0.02% 。 、 (13 )在（9 )記載之耐鹽酸腐姓性及耐硫酸腐餘性 - 20優異之低合金鋼之溶接接頭中，前述母材以質量％計更含 有N : 0.001〜0.007% ，而前述熔接金屬以質量％計更含有 N : 0.001 〜0·020/〇 〇 (14) 一種耐鹽酸腐蝕性及耐硫酸腐蝕性優異之低合 金鋼之熔接接頭，其特徵在於：其係由母材及熔接金屬所 20 200303929 玖、發明說明 構成；該母材係以質量％計含有： C : 0.001 〜0.20/〇 ；Sb: 0.01 to 〇_20 / 0; P: 0.03% or less; S: 0.03% or less; 15 and the remainder is composed of Fe and unavoidable impurities; and, the above-mentioned base metal and welded metal are as follows <; The acid corrosion resistance index M obtained by the formula (0) is 0 or more. AI / 10000 = 0.0005+ 0.045x Sb%-C% x Mo% &lt; ΐ) The above "%" means "mass%". 20 In the weld joint of low alloy steel with excellent resistance to hydrochloric acid and sulfuric acid as described in (2), the difference absolute value I ΔΑΙΙ of the acid corrosion resistance index A1 of the aforementioned base metal and the dissolved metal is 20 or less. (8) The fusion joint φ of hydrochloric acid corrosion resistance and low alloy steel with excellent corrosion resistance described in (6), suppose that the base material contains s 19 200303929 in mass%, 说明, description of the invention : 0.005 exceeds ~ 0.025%, and the aforementioned weld metal contains S in mass%: 0.005 exceeds ~ 0.02%. (9) In the dazzle joint of the low alloy steel excellent in resistance to hydrochloric acid and sulfuric acid as described in (7), the aforementioned base metal contains s 5: 0 · 005 in excess of 0.025% by mass%, On the other hand, the aforementioned fusion metal contained S ··· 0.005 by mass% to exceed 0.02%. (10) In the weld joint of low alloy steel excellent in hydrochloric acid corrosion resistance and sulfuric acid corrosion resistance as described in (6), the aforementioned base material further includes, by mass%, N: 0.001 to 0.007%, and the aforementioned weld metal It also contains 10 N ··· 0.001 to 0.02% by mass%. (11) In the weld joint of the low alloy steel excellent in hydrochloric acid corrosion resistance and sulfuric acid corrosion resistance according to (7), the base material further contains N: 0.001 to 0.007% by mass%, and the weld metal is based on mass %% also contains N: 0.001 to 0.02%. 15 (12) In the weld joint of low-alloy steel excellent in hydrochloric acid corrosion resistance and sulfuric acid corrosion resistance according to (8), the base material further includes, by mass%, N. 0.001 to 0.007%, and the aforementioned weld The metal further contains N in mass%: 0.001 ^ 0.02%. (13) In the weld joint of the excellent low-alloy steel of 20 excellent hydrochloric acid corrosion resistance and sulfuric acid residue resistance described in (9), the aforementioned base material further contains N: 0.001 to 0.007% by mass%, and The above-mentioned weld metal further contains N in a mass% of N: 0.001 to 0.020 / 00 (14) A weld joint of a low-alloy steel excellent in hydrochloric acid corrosion resistance and sulfuric acid corrosion resistance, characterized in that it is made of a base metal And Institute of Welding Metals 20 200303929 玖, the description of the invention; the base material contains in mass%: C: 0.001 to 0.20 / 〇;

Si : 0.01〜2.5% ； Μη : 0.1 〜2% ； 5 Cu : 0.1 〜1°/〇 ；Si: 0.01 ~ 2.5%; Μη: 0.1 ~ 2%; 5 Cu: 0.1 ~ 1 ° / 〇;

Mo : 0.001 〜1% ；Mo: 0.001 to 1%;

Sb : 0.01 〜0.2% ；Sb: 0.01 ~ 0.2%;

P : 0.05% 以下； S : 0.05% 以下； 10 更含有：P: 0.05% or less; S: 0.05% or less; 10 more:

Nb : 0.005〜0.1% ；Nb: 0.005 ~ 0.1%;

Ta : 0.005〜0.1% ； V : 0.005〜0·1〇/〇 ；Ta: 0.005 ~ 0.1%; V: 0.005 ~ 0.110 / 〇;

Ti : 0.005〜0·1% ；Ti: 0.005 ~ 0.1%;

15 W ·· 0.05〜1%中之1種或2種以上，而剩餘部份由Fe及 不可避免之雜質構成者；該熔接金屬係以質量％計含有： C : 0.005〜0·20/〇 ；15 W ·· One or two or more of 0.05 ~ 1%, and the remainder consisting of Fe and unavoidable impurities; The weld metal is contained in mass%: C: 0.005 ~ 0 · 20 / 〇 ;

Si : 0.01 〜2.5% ； Μη··0·1〜20/〇 ； 20 Cu : 0.1 〜1〇/〇 ;Si: 0.01 to 2.5%; Mn ·· 0 · 1 ~ 20 / 〇; 20 Cu: 0.1 to 1〇 / 〇;

Mo : 0.001 〜0.5% ；Mo: 0.001 to 0.5%;

Sb : 0.01 〜0.2% ； P : 0.03% 以下； S ·· 0.03% 以下； 21 200303929 玖、發明說明 更含有：Sb: 0.01 ~ 0.2%; P: 0.03% or less; S ·· 0.03% or less; 21 200303929 玖 、 Explanation of the invention Further contains:

Nb : 0.005〜0.1% ；Nb: 0.005 ~ 0.1%;

Ta : 0.005〜0.1% ； V ： 0.005-0.1% ; ’ 5 Ti : 0.005〜0.1% ； W : 0.05〜1%中之1種或2種以上，而剩餘部份由以及 不可避免之雜質構成者；且’前述母材及炫接金屬之以下 述〈2〉式求得之耐酸腐蝕性指數耵在〇以上。 EI/10000= 0.0005 + 0.045x Sb% - C% χ Moeq%〈2〉 10 另，上述「％」係表示「質量％」； 上述 M〇eq(質量％ )係表示 M〇eq=：M〇+5.1x (NM +Ta% ) + 4·2χ V% +9·3χ Ti% +〇·5χ (15) 在（14)記載之耐鹽酸腐蝕性及耐硫酸腐蝕性 優異之低合金鋼之熔接接頭中，前述母材與熔接金屬之耐 15酸腐蝕性指數EI之差分絕對值丨Δει丨在2〇以下。 另’ I △ El I = I EI (母材）—EI (熔接金屬）丨 _ (16) 在（14)記載之耐鹽酸腐蝕性及耐硫酸腐蝕性 優異之低合金鋼之熔接接頭中，前述母材以質量％計含有 S · 0.005超過〜0.025% ,而前述熔接金屬以質量％計含有 - 20 S : 0.005 超過〜0.02%。 (17) 在（15)記載之耐鹽酸腐蝕性及耐硫酸腐蝕性 優異之低合金鋼之熔接接頭中，前述母材以質量％計含有 S · 0.005超過〜0.025% ’而前述溶接金屬以質量％計含有 S : 0.005 超過〜0.02% 。 22 200303929 玖、發明說明 (18)在（14)記載之耐鹽酸腐蝕性及耐硫酸腐蝕性 優異之低合金鋼之炫接接頭中，前述母材以質量％計更含 有N : 0.001〜0·007% ，而前述熔接金屬以質量％計更含有 Ν ·· 0.001 〜0.02% 。 5 ( 19 )在（15 )記載之耐鹽酸腐蝕性及耐硫酸腐蝕性 優異之低合金鋼之熔接接頭中，前述母材以質量％計更含 有Ν : 0.001〜0.007% ’而前述溶接金屬以質量％計更含有 Ν : 0·001 〜0.02% 。 (20) 在（16)記載之耐鹽酸腐鍅性及耐硫酸腐餘性 1〇 優異之低合金鋼之溶接接頭中，前述母材以質量％計更含 有Ν : 0.001〜0.007% ，而前述溶接金屬以質量％計更含有 Ν : 0.001 〜〇·〇20/0 。 (21) 在（17)記載之耐鹽酸腐蝕性及耐硫酸腐蝕性 優異之低合金鋼之熔接接頭中，前述母材以質量％計更含 15 有Ν : 0.001〜0.007% ，而前述熔接金屬以質量％計更含有 Ν : 0.001 〜〇.〇20/0 。 (22 )在（6 )〜（21 )任一項記載之耐鹽酸腐餘性及 耐硫酸腐蝕性優異之低合金鋼之熔接接頭令，前述母材及 熔接金屬以質量％計更含有： 20 Cr: 0.1 〜0.5% ; N : 〇·〇〇卜0.02% ； A1 : 0.005〜0.1% ;Ta: 0.005 ~ 0.1%; V: 0.005-0.1%; '5Ti: 0.005 ~ 0.1%; W: One or more of 0.05 ~ 1%, and the remainder is composed of and inevitable impurities ; And 'The acid corrosion resistance index of the aforementioned base material and dazzling metal obtained by the following <2> formula is 以上 or more. EI / 10000 = 0.0005 + 0.045x Sb%-C% χ Moeq% <2> 10 In addition, the above "%" means "mass%"; the above Moq (mass%) means Moq =: M. + 5.1x (NM + Ta%) + 4 · 2χ V% + 9 · 3χ Ti% + 0.5 × (15) Welding of low alloy steel with excellent hydrochloric acid corrosion resistance and sulfuric acid corrosion resistance as described in (14) In the joint, the absolute absolute difference ΔΔε 丨 of the 15 acid corrosion resistance index EI of the aforementioned base metal and the weld metal is less than 20. In addition, I △ El I = I EI (base metal) —EI (welded metal) 丨 _ (16) In the weld joint of low alloy steel excellent in hydrochloric acid corrosion resistance and sulfuric acid corrosion resistance described in (14), the foregoing The base metal contains S in an amount of 0.005 or more in excess of 0.025% by mass, and the above-mentioned weld metal contains -20 S in an amount of 0.005 or more in excess of 0.02%. (17) In the weld joint of low-alloy steel excellent in hydrochloric acid corrosion resistance and sulfuric acid corrosion resistance according to (15), the base metal contains S in an amount of more than 0.005% by mass in terms of mass%, and the welded metal is in a mass of %% contains S: 0.005 more than 0.02%. 22 200303929 发明, Description of the invention (18) In the dazzle joint of low alloy steel excellent in hydrochloric acid corrosion resistance and sulfuric acid corrosion resistance described in (14), the aforementioned base material further contains N in a mass% of N: 0.001 to 0 · 007%, and the aforementioned weld metal further contains N ·· 0.001 to 0.02% by mass%. 5 (19) In the weld joint of the low alloy steel excellent in hydrochloric acid corrosion resistance and sulfuric acid corrosion resistance according to (15), the base material further contains N: 0.001 to 0.007% by mass%, and the welded metal is In terms of mass%, it also contains N: 0.001 to 0.02%. (20) In the welded joint of the low alloy steel with excellent hydrochloric acid corrosion resistance and sulfuric acid corrosion resistance 10 as described in (16), the base material further contains N: 0.001 to 0.007% by mass%, and the foregoing The welded metal further contains N: 0.001 to 〇20 / 0 in mass%. (21) In the weld joint of low-alloy steel excellent in hydrochloric acid corrosion resistance and sulfuric acid corrosion resistance as described in (17), the aforementioned base material contains 15% by mass in terms of N: 0.001 to 0.007%, and the aforementioned welded metal It further contains N: 0.001 to 0.020 / 0 in mass%. (22) The welding joint order of the low alloy steel excellent in hydrochloric acid corrosion resistance and sulfuric acid corrosion resistance as described in any one of (6) to (21), the aforementioned base material and weld metal further include: 20% by mass: 20 Cr: 0.1 ~ 0.5%; N: 〇 · 〇〇 卜 0.02%; A1: 0.005 ~ 0.1%;

Ca : 0.0002〜0.01% ;Ca: 0.0002 ~ 0.01%;

Mg ： 0.0002^0.01% ； 200303929 玖、發明說明 REM : 0.0002〜0.01% ； B ： 0.0002^0.005% ；Mg: 0.0002 ^ 0.01%; 200303929 玖, description of the invention REM: 0.0002 ~ 0.01%; B: 0.0002 ^ 0.005%;

La : 0.0002〜0.01% ;La: 0.0002 ~ 0.01%;

Ce : 0.0002〜0.01% ; 5 Sn : 0.01 〜〇.30/0 ；Ce: 0.0002 ~ 0.01%; 5 Sn: 0.01 ~ 0.30 / 0;

Pb ： 0.01^0.3% ；Pb: 0.01 ^ 0.3%;

Se : 0.001 〜0.1% ；Se: 0.001 to 0.1%;

Te : 0.001 〜0.1% ；Te: 0.001 to 0.1%;

Bi ： 0.001-0.1% ； 10 Ag : 0.001 〜〇·50/0 ;Bi: 0.001-0.1%; 10 Ag: 0.001 ~ 〇 · 50/0;

Pd:0.001〜〇·1%中之！種或2種以上。 圖式簡單說明 第1圖係顯示涉及Cu〜Sb李麵夕^ ^ 乐鋼之耐鹽酸性之Mo 添加量之影響者。 15 弟2圖係顯示涉及Cu—Sb系鋼之耐硫酸性之M〇Pd: 0.001 ~ 〇 · 1%! One or two or more. Brief Description of the Drawings Figure 1 shows the influence of the amount of Mo added on the hydrochloric acid resistance of Le Steel, which is related to Cu ~ Sb Li Nianxi. Fig. 2 shows the M which is related to the sulfuric acid resistance of Cu-Sb steel.

添加量之影響者。 第3圖係模式地顯示涉及C—Cu — Mo系鋼之耐硫 酸性之C、Mo添加量之影響者。 第4圖係顯示涉及Cu — Mo系鋼之耐硫酸性界限 20 Mo量線之Sb量之影響者。 第5圖_示涉及Cu-MG-Sb系鋼之財鹽酸性 之S添加量之影響者。 第6圖係顯示CU - Μο-Sb系鋼之AI值與硫酸中 腐蝕速度之關係者。 24 200303929 玖、發明說明 第7圖係顯示Cu-Mo-Sb系鋼之EI值與硫酸中 腐名虫速度之關係者。 第8圖係顯示本發明鋼及比較鋼在鹽酸酸洗槽《 · 板厚減少量之過程變化者。 w 5 第9圖係顯不本發明鋼及比較鋼在廢棄物焚化施 设之排煙裝置之腐敍速度者。 第10圖係顯示本發明溶接接頭之丨ΔΑΙ丨與母材 及熔接金屬之硫酸中腐姓速度之關係者。 肇 第11圖係顯示本發明熔接接頭之丨ΔΕΙ丨與母材 ίο 及熔接金屬之硫酸中腐蝕速度之關係者。 第12(a)圖係顯示用以判定熔接金屬之耐蝕性之 腐餘試驗片之選取要領者。 第12(b)圖係顯示用以判定熔接金屬之耐蝕性之 腐餘試驗片之選取要領之第12 (a)圖之χ_χ，截面圖。 15 第13圖係顯示用以判定熔接接頭部之耐蝕性之腐 蝕試驗片之選取要領者。 鲁Influencer of the added amount. Figure 3 shows the influence of the amount of C and Mo added on the sulfur and acid resistance of C—Cu—Mo steel. Fig. 4 shows the influence of the amount of Sb on the 20 Mo quantity line of the sulfuric acid resistance limit of Cu-Mo steel. Figure 5_ shows the influence of the amount of S added on the hydrochloric acid properties of Cu-MG-Sb-based steels. Figure 6 shows the relationship between the AI value of CU-Μο-Sb series steel and the corrosion rate in sulfuric acid. 24 200303929 发明 、 Explanation of the invention Figure 7 shows the relationship between the EI value of Cu-Mo-Sb-based steel and the speed of smuts in sulfuric acid. Fig. 8 is a graph showing the process change of the plate thickness reduction of the steel of the present invention and the comparative steel in a hydrochloric acid pickling tank. w 5 Fig. 9 shows the corrosion rate of the smoke exhaust device of the invented steel and comparative steel in waste incineration facilities. Fig. 10 is a graph showing the relationship between the ΔΔΙ 丨 of the welded joint of the present invention and the speed of the base metal and the welded metal in sulfuric acid. Figure 11 shows the relationship between the ΔΔΙ 丨 of the welded joint of the present invention, the base metal, and the corrosion rate in sulfuric acid of the welded metal. Figure 12 (a) shows the selection method of the corrosion test piece used to determine the corrosion resistance of the weld metal. Fig. 12 (b) is a cross-sectional view of χ_χ of Fig. 12 (a), which shows the selection method of the corrosion test piece used to determine the corrosion resistance of the weld metal. 15 Figure 13 shows the selection method of the corrosion test piece used to determine the corrosion resistance of the weld joint. Lu

【實施方式；J 詳細說明本發明。首先，就本發明之低合金 鋼及嫁 接接頭之母材（以下稱該等為本發明鋼）以及有關熔接接 ， 20頭之溶接金屬的成份元素與其添加量加以說明。#，成份 添加量之％係指質量％ 。 (1 )本發明鋼（低合金鋼、熔接接頭母材） 由於c降低至未滿0.001%在工業上明顯阻礙經濟效 盃，故添加〇·001%以上，而為確保強度宜添加〇 〇〇2%以 25 200303929 玖、發明說明 上。以在c被稱為使耐硫酸露點腐㈣及耐鹽酸露點腐 姓性降低之元素，依本發明，若為Cu-M〇-外系鋼時， 當添加C0.06%以下，則耐鹽酸性之阻礙效果不明顯。又 ’關於耐硫酸性，當滿足C% X Μ。％ α·_5 + 0.045χ 5 Sb日夺，不阻礙耐疏酸性，然而，一旦添加超過此式之c 量’則耐硫酸性急遽下降。若為更重視耐鹽酸性之用途時 ，則不需上述限;t，而宜添加G鳥以上之c量。另―方 面’由於-旦超過0.2% ’炫接性、耐硫酸性及鹽酸性便 降低，故以0.001〜0.2%為限定範圍。特別是在煙自、管 ίο道等之炫接構造用途上以0 02〜015隸，在冷加工用途 上以0.002〜0.03%為佳。 為了脫氧，Si添加0·01%以上。過度之添加若為熱 札鋼板時，由於將導致熱軋鏽姓之固除鏽性之降低） ，而使稱為所謂蔓草花紋或麻子之鏽蝕瑕庇急遽增加，故 15以2·5%為上限。Si具有與添加量大致成比例，而使耐硫 酸性提高之效果，但關於耐鹽酸性之效果則難以確認。因 此，若重視耐鹽酸性時，以0.554.2%之添加量為佳。若 考慮作為溶接構造用鋼之炼接性或溶接部之勃性及製造性 牯，以0.1〜0.55%之添加量為佳。進而，若考慮於熱軋鋼 20板製造時產生之鏽蝕瑕庇之產生率時，以〇·2〜〇·35%之添 加量最佳。 Μη為調整鋼之強度而添加〇1%以上，由於其上限 在2%即足夠，故以山卜找為限定範圍。又，添加量 之增加顯示耐硫酸性稍微降低之傾向，然由於並非明顯阻 26 200303929 玖、發明說明 礙本發明之Cu — Mo — Sb系之優異之耐硫酸性，故以依作 為熔接構造用鋼所需之機械特性之C — Mn平衡添加即可 。當耐蝕性欲獲得最大限時，以〇1〜〇.7%之範圍為佳。[Embodiment; J The present invention is explained in detail. First, the base metal of the low-alloy steel and the graft joint of the present invention (hereinafter referred to as the steel of the present invention) and related welding, the constituent elements of the 20 welded metals and their added amounts will be described. #, Ingredients% added refers to mass%. (1) The steel of the present invention (low alloy steel, base material for welded joints) Since c is reduced to less than 0.001%, which is a significant industrial hindrance to the economic efficiency cup, it is added by more than 0.001%, and it should be added to ensure strength. 2% to 25 200303929 发明, invention description. According to the present invention, in the case of Cu-M0-outer steel, the element which is called to reduce the dew point resistance of sulfuric acid and the dew point resistance of hydrochloric acid is resistant to hydrochloric acid. The barrier effect of sex is not obvious. In addition, regarding sulfuric acid resistance, C% X M is satisfied. % Α · _5 + 0.045χ 5 Sb, which does not impede the resistance to sparse acid. However, when it exceeds the amount c of this formula, the sulfuric acid resistance decreases sharply. If it is more important for the use of hydrochloric acid resistance, the above limit is not required; t, but the amount of c above G bird should be added. On the other hand, since -denier exceeds 0.2%, the glazing property, sulfuric acid resistance, and hydrochloric acid properties are reduced, so the limited range is 0.001 to 0.2%. In particular, it is preferable to use 0 02 to 015 for glazed joints such as smoke and pipes, and 0.002 to 0.03% for cold processing. For deoxidation, Si is added by 0.01% or more. If the excessive addition is a hot-rolled steel sheet, it will cause the reduction of the rust-removing property of the hot-rolled rust name), and the rust defect called the so-called creeping pattern or hemp will increase sharply, so 15 · 2.5% is Ceiling. Si has the effect of increasing the sulfur resistance and acidity in approximately proportion to the amount added, but it is difficult to confirm the effect on the hydrochloric acid resistance. Therefore, if hydrochloric acid resistance is important, the addition amount of 0.554.2% is preferred. In consideration of the weldability of the steel for the welding structure or the robustness and manufacturability of the welded part, it is preferable to add it in an amount of 0.1 to 0.55%. Furthermore, when considering the occurrence rate of rust flaws generated during the manufacture of hot-rolled steel 20 sheets, an addition amount of 0.2 to 0.35% is optimal. Mn is added to adjust the strength of the steel by more than 0.01%. Since the upper limit is 2%, it is sufficient. In addition, an increase in the amount of addition shows a tendency to decrease the sulfuric acid resistance slightly. However, since it is not obvious resistance 26 200303929 发明, description of the invention hinders the excellent sulfuric acid resistance of the Cu-Mo-Sb system of the present invention, it is used as a welding structure The mechanical properties required for steel can be added by C-Mn balance. When the maximum corrosion resistance is obtained, a range of 0.001 to 0.7% is preferred.

Cu為確保耐硫酸性及耐鹽酸性而須添加〇1%以上， 5另一方面，由於縱使添加超過1% ，該等效果仍幾乎飽和 ，而導致過度之強度提高及製造性降低，故以〇1〜1%為 限定範圍。較佳為〇·2〜“％之添加在耐蝕性及製造性之 平衡上極優異。 φCu must be added at least 0.01% in order to ensure sulfuric acid resistance and hydrochloric acid resistance. 5 On the other hand, even if the addition exceeds 1%, these effects are still almost saturated, resulting in excessive strength enhancement and lower manufacturability. 〇1 ~ 1% is a limited range. It is preferred that the addition of 0.2 to 2% be excellent in the balance between corrosion resistance and manufacturability. Φ

Mo為备於Cu— Sb系添加〇 〇〇1%以上時，即使耐鹽 1〇 Sd顯著提南之必須元素。舉例言之，當以綱嘲轉爐溶 製鋼犄，當投入30kg以上之M〇氧化物或原料金屬時， 鋼中之Mo里即使未滿發射光譜分析（光電發射分光光度 冲）之分析下限值（0·003% )仍可發現效果，故在工業 上Mo合金投入溶鋼中不依Μ〇對溶鋼之成品率確認即可 15 。進一步’在滿足 C% χ Μ〇°/« $〇·〇〇〇5 + 〇·〇45χ Sb% 之 範圍中，Mo作為使财硫酸性提高之元素而產生作用，财 « 硫酸性與上述耐鹽酸性一同提高。不阻礙耐硫酸性之对硫 酸性界限Mo量如前述如低c或高％般_ (增加 Mo里之上限考慮對機械性質之影響，而為。When Mo is added to the Cu-Sb system at 0.001% or more, it is an essential element that significantly improves even the salt resistance of 10 Sd. For example, when a steel smelter is melted in a mock furnace, when Mo oxide or raw metal of more than 30kg is input, the lower limit of the analysis of Mo in the steel is not even the emission spectrum analysis (photoelectric emission spectrophotometry). (0 · 003%) The effect can still be found, so in the industrial application of Mo alloy into molten steel, the yield of molten steel can be confirmed according to Mo. 15 Further, in a range satisfying C% χ Μ〇 ° / «$ 〇 · 〇〇〇〇5 + 〇 · 〇45χ Sb%, Mo acts as an element that improves the sulfuric acid properties of the metals. Hydrochloric acid properties are also improved. The sulfuric acid limit Mo amount that does not hinder sulfuric acid resistance is as described above, such as low c or high%. (Increase the upper limit of Mo to consider the effect on mechanical properties.

Sb為獲彳f耐硫性、耐鹽酸性及耐氣化物含有酸腐 H、加〇.〇1/〇以上。耐硫酸性係％量越多越提高， 但在〇·1%幾乎飽和，而-旦超過0.2%則熱加卫性、鋼板 及溶接接頭之Μ均降低，故為㈣卜^。又，考慮與 耐I虫H㉟加工性及機械特性之平衡，卩〇〇5〜〇·⑼為 27 200303929 玖、發明說明 佳0 為不可避免之雜貝元素’且明顯地阻礙耐硫酸露點 腐钱性及耐魏露點賴性，故其範圍在q.㈣以下。更 佳為當限定在以下時，可明顯改善耐硫酸露點腐蚀 性及耐鹽酸露點腐蝕性。若考慮脫”程之負荷及經濟效 益，則以0.005〜0.01%最佳。Sb is obtained to obtain sulfur resistance, hydrochloric acid resistance, and gasification resistance. Acidic rot H is added, and 0.001 / 1 / is added. Sulfuric acid resistance is increased as the amount of% is increased, but it is almost saturated at 0.1%, and when the denier exceeds 0.2%, the heat resistance, the steel sheet, and the M of the welded joint are all reduced. In addition, considering the balance between the processability and mechanical properties of H. pylori resistance, ㉟〇5 ～ 〇 · ⑼ is 27 200303929 玖, invention description is good 0 is an inevitable miscellaneous shell element ', and it obviously hinders sulfuric acid dew point corrosion The nature and resistance to Wei dew point depends on the nature, so its range is below q.㈣. More preferably, when it is limited to the following, the sulfuric acid dew point corrosion resistance and the hydrochloric acid dew point corrosion resistance can be significantly improved. If the load and economic benefits of the off-course are considered, 0.005 ~ 0.01% is the best.

S與P同樣為不可避免之雜質元素，一旦超過〇 〇5% ’便阻礙熱加工性及機械性質，故其上限為刚。然而 ，如第5圖所示，在本發明之Cu〜M〇—sb系鋼中，由於 10若適量含有S超過0·005% ,可明顯提高耐硫酸性及财鹽 酸性，故以含有超過0·005%為佳。然而，即使含有超過 〇.〇25/0，其效果仍飽和，故以含有〇〇〇5超過〜㈣謂為 佳。特別是考慮耐鹽酸性、耐硫酸性、機械性質（耐層狀 撕裂性等）及熱加工性時，以〇〇1〜〇〇25%為最佳。 15 在本發明鋼中，以下式〈1〉定義之耐酸腐蝕性指數S and P are unavoidable impurity elements. Once it exceeds 0.05% ′, hot workability and mechanical properties are impeded. Therefore, the upper limit is S. However, as shown in FIG. 5, in the Cu ~ M0-sb series steel of the present invention, if 10 contains S in an appropriate amount exceeding 0.005%, the sulfuric acid resistance and hydrochloric acid resistance can be significantly improved. 0.005% is preferred. However, the effect is saturated even if it contains more than 0.25 / 0, so it is better to contain more than 5,000. In particular, when considering hydrochloric acid resistance, sulfuric acid resistance, mechanical properties (layer-like tear resistance, etc.) and hot workability, 0.001 to 0.025% is the best. 15 In the steel of the present invention, the acid corrosion resistance index defined by the following formula <1>

ΑΙ滿足ΑΙ—〇日^ ,可獲得極優異之财鹽酸性及耐硫酸性 AI/10000= 0.0005+ 〇.〇45χ Sb°/〇 - C% x Mo°/〇 &lt;l&gt; 即，第6圖係顯示AI值與硫酸腐蝕速度之關係，如 20此圖所示，可知當耐酸腐蝕性AI在〇以上時，耐硫酸性 顯著提兩。因而，在本發明中，為使以上述〈1〉式求出 之耐酸腐蝕性指數AI達到〇以上，而添加Sb、c、Mo。 當滿足ΑΙ-0時，即滿足c% X Mo% $〇.0005 + 0·045χ Sb%時，例如為須具有優異加工性之冷軋鋼板時 28 200303929 玖、發明說明 由於宜為C量在0.01%以下之低c系，故此時若Sb添加 0.1% ，則藉添加0.5%以下之]vio，可同時獲得優異之耐 硫酸性與耐鹽酸性。 此外，當前述AI值超過75時，即Sb過剩時，由於 5不僅耐硫酸性及耐鹽酸性之提高效果幾乎飽和，且熱加工 性降低，故令其上限為75較佳。 又’本發明鋼以鋼板之強度、韌性、熔接性、高溫 特性等之改善為目的，而依需要添加Nb、Ta、V、Ti、W · ο 1〇 Nb、Ta、V、Ti為分別添加〇·〇〇5%以上，對細粒化 之強度初性之提高、高溫強度之提高具有效果之元素，對 冷加工性之提高亦具有效果。然而，一旦超過〇·1% ，其 效果便飽和。因此，分別以〇.0〇5〜〇1%為限定範圍。 W若添加0.05%以上時，對高溫強度及耐鹽酸性之 提同具有效果，由於該等效果在丨％飽和，故令範圍為 〇·〇5 〜1%。 φ 另，Nb、Ta、V、Ti、W之碳氮化物形成元素群添加 過术i k ’則阻礙本發明鋼之财硫酸腐姓性。即，該等元素 具有使耐硫酸性界限Mo量降低之作用，而其程度可以下 ， 20述之M〇當量（M〇eq)調整。 M〇eq (質量 ％ ) = Μο% + 5·1χ ( Nb% + Ta% ) + 4·2χ V°/〇 +9·3Χ Ti〇/〇 +〇.5χ w% 當添加Nb、Ta、V、Ti、W時，不阻礙耐硫酸性之 界限之成份平衡以擴張耐酸腐蝕性指數耵取代上述AI而 29 200303929 玖、發明說明求得。EI為Sb、c、M〇eq (質量％ )之函數，以下式〈2 〉求得。ΕΙ/1_0=〇·_5 + ㈣45χ sb% — c% χ 〈2〉 因所需目的而複合添加Nb、Ta、V、Ti、W時，若 5滿職滿足時，可同時獲得極優異之耐鹽酸性及耐硫酸 性0 10 I7，第7圖係顯示EI值與硫酸腐蝕速度之關係者， 如此圖所示，可知當擴張耐酸腐蝕性指數扭在〇以上時 ’财硫酸性顯著地提高。因而，本發明鋼中，為使以上述 〈2〉式所求出之擴張耐酸腐姓指數達g以上，而添加μ 、C、Mo。ΑΙ satisfies ΑΙ-0 days ^, and can obtain extremely excellent hydrochloric acid and sulfuric acid resistance AI / 10000 = 0.0005+ 0.005 × Sb ° / 〇- C% x Mo ° / 〇 &lt; l &gt; The graph shows the relationship between the AI value and the sulfuric acid corrosion rate. As shown in the figure 20, it can be seen that when the acid corrosion resistance AI is above 0, the sulfuric acid resistance is significantly improved by two. Therefore, in the present invention, Sb, c, and Mo are added so that the acid corrosion resistance index AI obtained by the above-mentioned formula (1) becomes 0 or more. When ΑΙ-0 is satisfied, that is, when c% X Mo% $ 〇.0005 + 0 · 045χ Sb% is satisfied, for example, when it is a cold-rolled steel plate that must have excellent workability 28 200303929 The low c system is less than 0.01%, so if Sb is added at 0.1% at this time, by adding 0.5% or less of vio, excellent sulfuric acid resistance and hydrochloric acid resistance can be obtained at the same time. In addition, when the aforementioned AI value exceeds 75, that is, when Sb is excessive, not only the effect of improving the sulfuric acid resistance and the hydrochloric acid resistance is almost saturated, but also the hot workability is reduced, so the upper limit is preferably 75. Also, the steel of the present invention is for the purpose of improving the strength, toughness, weldability, and high temperature characteristics of the steel sheet, and Nb, Ta, V, Ti, W · 10Nb, Ta, V, and Ti are added as needed. Above 0.005%, it is an element that has an effect on the improvement of the initial strength of fine graining and an increase in the high temperature strength, and also has an effect on the improvement of cold workability. However, once it exceeds 0.1%, its effect is saturated. Therefore, the limits are set to 0.05% to 0.001%, respectively. If W is added in an amount of 0.05% or more, it has an effect on the improvement of high-temperature strength and hydrochloric acid resistance. Since these effects are saturated at 丨%, the range is set to 0.05 to 1%. φ In addition, the addition of the carbonitride-forming element group of Nb, Ta, V, Ti, and W to the sulphuric acid sulfate property of the steel of the present invention is hindered. That is, these elements have the effect of reducing the amount of Mo in the sulfuric acid resistance limit, and the degree of these elements can be adjusted by the Mo equivalent (Meq) described below. M〇eq (mass%) = Μο% + 5.1 · χ (Nb% + Ta%) + 4.2χ V ° / 〇 + 9 · 3χ Ti〇 / 〇 + 0.5χ w% When Nb, Ta, V In the case of Ti, W, Ti, W, the balance of components that does not hinder the limit of sulfuric acid resistance is obtained by expanding the acid corrosion resistance index 耵 instead of the above AI 29 200303929 发明, description of the invention. EI is a function of Sb, c, Moeq (mass%), and it is calculated | required by following formula <2>. ΕΙ / 1_0 = 〇 · _5 + ㈣45χ sb% — c% χ 〈2〉 When Nb, Ta, V, Ti, and W are added in combination for the required purpose, if 5 full positions are satisfied, excellent resistance can be obtained at the same time. Hydrochloric acid resistance and sulfuric acid resistance 0 10 I7. Figure 7 shows the relationship between the EI value and the sulfuric acid corrosion rate. As shown in this figure, it can be seen that when the expansion acid corrosion resistance index is twisted above 0, the sulfuric acid resistance is significantly improved. Therefore, in the steel of the present invention, μ, C, and Mo are added so that the expanded acid-resistance surviving index calculated by the above-mentioned formula (2) becomes g or more.

此外’當前述EI值超過75，即Sb過剩時，由於不 僅耐硫酸性及耐鹽酸性之提高效果幾乎鮮，且熱加工性 降低，故其上限以75為佳。 15In addition, when the EI value exceeds 75, that is, when Sb is excessive, not only the effect of improving the sulfuric acid resistance and the hydrochloric acid resistance is almost absent, but also the hot workability is reduced. Therefore, the upper limit is preferably 75. 15

Cr係為提高耐候性等，而依需要添加〇1%以上 而，由於一旦超過0.5% ， 顯下降，故依需要添加時， 硫酸性及耐鹽酸性之點而言 特別是本發明鋼之耐硫酸性明 以0.5%為上限。由更提高耐 ，Cr含有量宜限定在〇1%以In order to improve weather resistance, etc., Cr is added by 0.01% or more as needed, and once it exceeds 0.5%, it will decrease significantly. Therefore, when added as needed, sulfuric acid and hydrochloric acid resistance are particularly important for the steel of the present invention. Sulfate is limited to 0.5%. To improve the resistance, the Cr content should be limited to 0% or less.

20 下，最佳是不添加。 Ni係具有提南耐鹽酸性之作 用之7L素，以防止在本 發明之Cu與Sb之添加，產生之熱加工時之表面裂咬為 目的，而依需要添加〇.1%以上，由於即使添加超過Μ 其效果仍飽和，故以〇·1〜Ι% Λ P 馮限疋靶圍。特別是以0.J %〜Cu% X 0.5之範圍為佳。 · 30 200303929 玖、發明說明 N係具有提高耐鹽酸性之作用之不可避免的雜質元素 ’依其需要添加0.001%以上，由於超過0.007%之過度添 加為鋼胚鑄造時產生表面裂紋之原因，故以0.001〜0.007 %為限定範圍。 AI通常作為脫氧元素而添加。在本發明鋼中，依需 要添加0.005%以上，由於一旦添加超過〇1% ，則破壞耐 鹽馱路點腐蝕性及熱加工性，故令其範圍為〇 〇〇5〜〇1%Under 20, it is best not to add. Ni is a 7L element that has the function of raising the resistance to hydrochloric acid. In order to prevent the surface cracking during hot processing caused by the addition of Cu and Sb of the present invention, it is added above 0.1% as needed. Adding more than Μ still saturates the effect, so the target range is from 0.1 to 1% Λ P Feng Xuan. In particular, a range of 0.J% to Cu% X 0.5 is preferable. · 30 200303929 发明, description of the invention N is an unavoidable impurity element that has the effect of improving the resistance to hydrochloric acid. 0.001% or more is added as required. The excessive addition of more than 0.007% is the cause of surface cracks during casting of the steel billet. The limited range is 0.001 to 0.007%. AI is usually added as a deoxidizing element. In the steel of the present invention, if necessary, 0.005% or more is added. Once the addition exceeds 〇1%, the salt point corrosion resistance and hot workability are destroyed, so the range is set to 0.005% to 〇1%.

又’本發明鋼依需要添加Ca、Mg、Ce、La、REM、 10 B。 15 20Furthermore, Ca, Mg, Ce, La, REM, and 10 B are added to the steel of the present invention as necessary. 15 20

Ca、Mg、REM、B由於藉淨化性之提高或粒徑之細 U化，有助於鋼之韌性，且添加至上限對耐蝕性沒有影響 ，故依需要分別添加0·0002%以上，由於其效果在Ca、 Mg、Ce、La、REM 超過 〇 〇1%，B 超過 〇 〇〇5%，方對 耐姓性造成不良影響，故Ca, Mg, REM, and B contribute to the toughness of the steel due to the improvement of purification properties or the refinement of the particle size, and addition to the upper limit has no effect on the corrosion resistance. Therefore, it is necessary to add more than 0 · 0002% as needed. The effect is that Ca, Mg, Ce, La, and REM exceed 0.001%, and B exceeds 0.0005%, which has a negative impact on survivability.

0002 〇.〇1/0為限定範圍，B以〇 〇〇〇2〜〇•⑽％為限定範 圍0 又，本發明鋼依需要添加Sn、pb、Se、^、則。0002 〇1 / 0/0 is the limited range, and B is limited to the range of 0.002 ~ 0 • 为%. In addition, the steel of the present invention may be added with Sn, pb, Se, ^, or as needed.

Sn、Pb具有提高易割性之作用，為得到此效果， 添加0·01%以上，由於一曰人亡田 由於旦含有1超過0.3% ，熱加工 下降’故令其含有量上限為0.3% 。Sn and Pb have the effect of improving the cuttability. In order to obtain this effect, 0.01% or more is added. Since the temperature of 1% is more than 0.3%, the thermal processing is reduced, so the upper limit of the content is 0.3%. .

Se、Te、Bi具有更提高耐酸性之作用，為得到此 果，需分別添加〇._以上，—旦各自之含有量超過C % ’則導致製造性之降低及製造成本之增加，故令其各 31 200303929 玫、發明說明 之含有量上限為〇.1% 。 又’本發明鋼依需要添加Ag、Pd。 g Pd具有提兩在咼溫高濃度硫酸環境下之耐蝕性 ，為仔到此效果，需分別添加0.001%以上，由於一旦各 自之3有里超過〇·5%、G1% ’不但製造成本增加，且熱 加工性下降，故分別令其含有量上限為0·5%、〇.1%。 (2)熔接金屬 C係作為熔接構造用鋼之熔接接頭，為確保強度而添 φ 加，由於一旦添加超過〇·2% ，則熔接性及耐硫酸性降低 1〇 故限定在0·2%以下。在熔接性及耐硫酸性之觀點上， c之含有量只要少量即可，但考慮強度或經濟效益，而為 0.005〜0.2% 。特別是與Μ〇共存時，超過〇〇2%之c添 加則使耐硫酸性明顯降低。若需考慮耐鹽酸性與耐硫酸性 之平衡時，以0.05%以下為佳。 15 Si在溶接金屬中含有〇·〇1%以上時，由於與cu共存 ’而提尚耐硫酸性及耐鹽酸性，故以0 01%為下限。然而 · 由於一旦超過2.5% ,不見耐餘性之提高，溶接金屬之 韌性卻明顯下降，故令上限為2·5% 。當較重視熔接施工 · 性或熔接部時，以0.1〜1%為佳。 ， -0 Μη為脫氧及強度調整而添加0.1%以上，由於其上 限為2%即足夠，故以〇·ι〜2%為限定範圍。Se, Te, and Bi have the effect of improving the acid resistance. To obtain this result, it is necessary to add more than 0.1%, respectively-once the content of each of them exceeds C% ', it will lead to a reduction in manufacturability and an increase in manufacturing costs. Its 31 200303929 rose, the upper limit of the content of the invention description is 0.1%. Furthermore, Ag and Pd are added to the steel of the present invention as necessary. g Pd has corrosion resistance under high temperature and high concentration sulfuric acid environment. In order to achieve this effect, it is necessary to add more than 0.001%, because once each of them exceeds 0.5% and G1%, not only the manufacturing cost increases And the hot workability is reduced, so the upper limit of the content is set to 0.5% and 0.1%, respectively. (2) Welding metal C is used as a welding joint for steel for welding structure. Φ is added to ensure the strength. Once it is added more than 0.2%, the weldability and sulfuric acid resistance are reduced by 10, so it is limited to 0.2%. the following. From the standpoint of weldability and sulfuric acid resistance, the content of c may be a small amount, but it is 0.005 to 0.2% in consideration of strength or economic benefits. Especially when coexisting with MO, the addition of c exceeding 0.02% significantly reduces sulfuric acid resistance. When considering the balance between hydrochloric acid resistance and sulfuric acid resistance, 0.05% or less is preferred. When 15 Si is contained in an amount of 0.01% or more in the weld metal, sulfuric acid resistance and hydrochloric acid resistance are improved due to coexistence with cu, so the lower limit is 0.01%. However, once it exceeds 2.5%, there is no improvement in residual resistance, but the toughness of the weld metal is significantly reduced, so the upper limit is set to 2.5%. When more emphasis is placed on welding construction properties or welding parts, 0.1 to 1% is preferred. , -0 Μη is added at 0.1% or more for deoxidation and strength adjustment, and the upper limit of 2% is sufficient. Therefore, the limit range is 0 to 2%.

Cu為確保耐硫酸性及财鹽酸性，而須添加〇 · 1 %以上 。由於即使添加超過1% ，耐蝕性仍幾乎飽和，而導致過 度之強度上升及凝固裂紋，故以〇·1〜1%為限定範圍。更 32 200303929 玖、發明說明 佳為0.25〜0.75%之添加在耐蝕性及製造性之平衡上具有 優異性。 MO係在Cu-Sb系之炫接金屬中添加G•⑼1%以上， 即使耐鹽酸性明顯提高之必要元素。進而，在滿足χ 5 M〇% g._5 + 0.045xSb%之範圍中，編係作為提高耐 爪酉夂ϋ之元素而產生作用’而使财硫酸性與上述耐鹽酸性 -同提高。Μ。量之上限考慮對炼接金屬之機械性質，而 為 0.5%。Cu must be added to 0.1% or more in order to ensure sulfuric acid resistance and hydrochloric acid resistance. Even if it is added more than 1%, the corrosion resistance is almost saturated, resulting in excessive strength increase and solidification cracking. Therefore, it is limited to 0.1 to 1%. More 32 200303929 发明, description of the invention The addition of 0.25 ~ 0.75% is excellent in the balance of corrosion resistance and manufacturability. MO is an element necessary to add 1% or more G · ⑼ to Cu-Sb-based dazzling metals, even if the hydrochloric acid resistance is significantly improved. Furthermore, in a range satisfying χ 5 Mo% g._5 + 0.045xSb%, the knitting system acts as an element that increases claw resistance, and the sulfuric acid resistance is improved as well as the above-mentioned hydrochloric acid resistance. Μ. The upper limit of the amount is 0.5% in consideration of the mechanical properties of the metal to be welded.

Sb為依需要添加0 〇1%以上時，與Cu共存，而使 10耐硫酸性及耐鹽酸性進一步提高之元素，而以〇〇1%為下 限。為獲得足夠之耐蝕性宜添加〇 〇5%以上。另一方面， 由於在0.2%其效果幾乎飽和，故限定在〇〇1〜〇·2% 。由 於熔接金屬中之Sb —旦超過〇·15% ，則熔接施工性降低 ，故以0.05〜0.15%更佳。 15 ρ係不可避免之雜質元素，由於明顯阻礙耐硫酸性及 耐鹽酸性，故令其範圍在〇·〇3%以下。更佳為當限定在 0· 1 %以下時，可明顯改善耐硫酸性及耐鹽酸性。以 0.005〜0.01%較佳，更佳為〇 〇〇5%以下。 S與Ρ同樣為不可避免之雜質元素，由於超過0.03% 20時，耐硫酸性明顯降低，故為確保足夠之耐硫酸性及耐鹽 酸性’須將上限限定在〇 〇3% 。然而，如第5圖所示，在 本發明之Cu—Mo—Sb系之鋼中，當適量含有S超過 0.05%時，耐鹽酸腐蝕性與耐硫酸腐蝕性一同明顯提高。 因此’在溶接金屬中，亦宜含有超過〇〇〇5% 。然而，即 200303929 玖、發明說明 使超過0.02% ，其效果仍飽和，且考慮確保熔接金屬之韌 性，以0.02%以下為佳。特別是考慮耐鹽酸性、耐硫酸性 及機械性質時，s以0.005超過〜0.02%最佳。 在本發明之熔接接頭中，母材及熔接金屬，當以下 5式〈i〉式定義之耐酸腐蝕性AI滿足ΑΙ-0時，可庐得 極優異之耐鹽酸性及耐硫酸性。 ΑΙ/10000=〇·〇〇〇5 + 〇·〇45χ Sb% -C% X Mo% 〇〉 第6圖係顯示AI值與硫酸腐蝕速度之關係，如此圖 · 所示，當耐酸腐蝕性指數AI在〇以上時，由於耐硫酸性 1〇顯著提高，故在本發明中，為使以上述〈丨〉式所求之耐 酸腐蝕性指數ΑΙ達〇以上，亦在熔接金屬中添加sb、匸 、Mo。 當滿足ΑΙ-0時，即滿足c% χ M〇% s〇〇()〇5 + 〇·〇45χ Sb%時，例如熔接金屬之c量在〇 〇1%以下時， 15若Sb添加〇·ΐ% ,則藉添加〇·5%以下之Μ〇，可獲得優 異之耐硫酸性與耐鹽酸性及耐氯化物含有酸腐蝕性。 · 此外’當前述ΑΙ值超過75時，即Sb過剩時，由於 不僅耐硫酸性、耐鹽酸性及耐氯化物含有酸腐蝕性之提高 ’ 效果幾乎飽和，且熱加工性降低，故令其上限為75較佳 ， 20 〇 進一步，在本發明之熔接接頭中，以令熔接接頭之 耐選擇腐蝕性指數丨ΔΑΙ |為適當之值為佳。 熔接接頭之耐選擇腐蝕性指數| ΔΑΙ |係以由母材 之耐酸腐蝕性指數ΑΙ (母材）及熔接金屬之耐酸腐蝕性 34 200303929 玖、發明說明 指數AI(_金屬）所得之下式〈3〉規定之。 (△AI卜丨AI (母材）—AI (溶接金屬）丨〈3〉 弟10圖係顯示1 ΔΑΙ I與母材及溶接金屬之疏酸腐 ㈣度之關係者’如第1G圖所示，丨^丨超過料， 1 5母^戈炫接金屬巾AI值較小者之純速度增加，而在硫 f兄下產生選擇性之加速腐餘。因而，為防止此種熔 接接頭之選擇性加速腐飯，令丨Δαι丨在2〇以下。 又在本叙明之炫接接頭中，以炼接接頭之強度、 · 早刃性、兩溫特性等之改善為目的，而依需要，於炫接接頭 10之溶接金屬添加Nb、Ta、Ti、W —種以上。Sb is an element that co-exists with Cu to add 10% sulfuric acid resistance and hydrochloric acid resistance when 0.001% or more is added as needed, and the lower limit is 0.001%. In order to obtain sufficient corrosion resistance, more than 0.05% should be added. On the other hand, the effect is almost saturated at 0.2%, so it is limited to 0.001 to 0.2%. Since Sb in the weld metal exceeds 0.15%, the welding workability decreases, so it is more preferably 0.05 to 0.15%. 15 ρ is an unavoidable impurity element, which obviously hinders sulfuric acid resistance and hydrochloric acid resistance, so its range is less than 0.03%. More preferably, when it is limited to 0.1% or less, the sulfuric acid resistance and the hydrochloric acid resistance can be significantly improved. It is preferably 0.005 to 0.01%, and more preferably 0.005% or less. S and P are unavoidable impurity elements. When it exceeds 0.03% 20, the sulfuric acid resistance is significantly reduced. Therefore, in order to ensure sufficient sulfuric acid resistance and salt acid resistance, the upper limit must be limited to 0.33%. However, as shown in Fig. 5, in the Cu-Mo-Sb-based steel of the present invention, when an appropriate amount of S exceeds 0.05%, the resistance to hydrochloric acid corrosion and the resistance to sulfuric acid corrosion are significantly improved together. Therefore, it is also desirable that 'in the weld metal contains more than 0.005%. However, that is, 200303929, the description of the invention, the effect is still saturated when it exceeds 0.02%, and it is considered that the toughness of the weld metal is ensured, and it is preferably 0.02% or less. In particular, when considering hydrochloric acid resistance, sulfuric acid resistance, and mechanical properties, it is preferable that s exceeds 0.005% to 0.02%. In the welded joint of the present invention, when the base material and the welded metal have the acid and corrosion resistance AI defined by the following formula (i) below AI-0, excellent hydrochloric acid resistance and sulfuric acid resistance can be obtained. ΑΙ / 10000 = 〇 · 〇〇〇5 + 〇 · 〇45 × Sb% -C% X Mo% 〇〉 Figure 6 shows the relationship between AI value and sulfuric acid corrosion rate, as shown in this figure. When the acid corrosion resistance index When AI is above 0, the sulfuric acid resistance is significantly improved by 10. Therefore, in the present invention, in order to make the acid corrosion resistance index A1 obtained by the above-mentioned <丨> formula reach 0 or more, sb and 匸 are also added to the weld metal. , Mo. When ΑΙ-0 is satisfied, that is, c% χ M〇% s〇〇 () 〇5 + 〇45 × Sb%, for example, when the amount of c of the weld metal is below 0.001%, 15 if Sb is added. · Ϊ́%, by adding MO of 0.5% or less, excellent sulfuric acid resistance, hydrochloric acid resistance, and acid corrosion resistance of chlorides can be obtained. · In addition, when the aforementioned A1 value exceeds 75, that is, when Sb is excessive, not only the sulfuric acid resistance, hydrochloric acid resistance, and chloride corrosion resistance are improved, the effect is almost saturated, and the hot workability is reduced, so the upper limit is set. It is preferably 75 and 200. Further, in the fusion joint of the present invention, it is preferable that the selective corrosion resistance index 丨 ΔAI | of the fusion joint is an appropriate value. Selective Corrosion Resistance Index of Welded Joints | ΔΑΙ | is based on the acid corrosion resistance index of the base metal (base metal) and the acid corrosion resistance of the weld metal 34 200303929 玖, the invention description index AI (_metal) obtained by the following formula < 3> stipulate. (△ AI Bu 丨 AI (base metal) —AI (dissolved metal) 丨 <3> Figure 10 shows the relationship between 1 ΔΑΙ I and the degree of sparse acid rot of the base material and the dissolved metal 'as shown in Figure 1G , ^^ 丨 Exceeding expectations, the pure speed of the smaller AI value of 1 5 female ^ Ge Xuan welded metal towels increases, and selective accelerated corrosion residue under sulfur f brother. Therefore, in order to prevent such welded joints Accelerated rotten rice, so that ΔΔι 丨 is less than 20. Also in this dazzle joint, the purpose is to improve the strength of the joint, the early edge and the two temperature characteristics, etc. Nb, Ta, Ti, W or more are added to the weld metal of the bright joint 10.

Nb、Ta、V、Ti分別為〇·〇〇5%以上之添加，而在細 粒化之強度㈣提高、高溫強度提高上具有效果之元素。 然而，一旦超過0·1 % ，其效果即飽和。因此，分別以 0-005〜0.1%為限定範圍。 15 W添加0·05%以上時，在高溫強度及耐鹽酸性之提 南上具有效果，而該等效果在1%即飽和，故令範圍^ Φ 0·05 〜1% 〇 另’於炫接金屬中過度添加Nb、Ta、V、Ti、W之 碳氮化物形成元素群時，阻礙本發明熔接接頭之耐硫酸腐 ^ 20姓性。即’該等元素具有使耐硫酸性界限Mo量降低之作 用’其程度可以下述之Mo當量（Moeq )調整。 M〇eq (質量 ％ ) = Mo% + 5.1x ( Nb% + Ta% ) + 4.2χ V% +9.3x Ti + 〇.5x w%。 當添加Nb、Ta、V、Ti、W時，不阻礙耐硫酸性之 35 200303929 玖、發明說明 界限之成份平衡係以擴張耐酸腐蝕性指數EI取代上述之 AI而獲得。EI係Sb、C、M〇eq (質量％ )之函數，以下 式〈2〉獲得。 EI/10000-0.0005 + 〇.〇45x Sb% - C% x Moeq &lt;2&gt; 5 因所品之目的’複合添加Ta、V、Ti、W時，若滿足 EI2 0 ’則可同時獲得極優異之耐鹽酸性及耐硫酸性。 即’第7圖係顯示EI值與硫酸腐蝕速度之關係者， 如此圖所示，可知當擴張耐酸腐蝕性指數EI在〇以上時 鲁 ，耐硫酸性便明顯提高。因此，在本發明熔接接頭之熔接 10金屬中，為使以上述〈2〉式所求之擴張耐酸腐蝕性指數 EI達0以上，而添加sb、c、Mo。 又，添加Nb、Ta、V、Ti、W之一種以上時，熔接 接頭之耐選擇腐蝕性指數不使用前述之AI，而使用擴張 耐酸腐蝕性指數EI來評價，藉此，可獲得更優異之熔接 15 接頭。 熔接接頭之擴張耐選擇腐蝕性指數I △ EI I由母材 φ 之擴張耐酸腐蝕性指數EI (母材）及熔接金屬之擴張耐 酸腐蝕指數EI (溶接金屬）以下式〈4〉規定。 | ΔΕΙ | — | EI (母材）—EI (熔接金屬）〈4〉 ' '° 帛U目係顯示丨ΔΕΙ丨與母材以及溶接金屬之硫酸 腐餘速度之關係者，如第！ i圖所示，當I △ EI i超過2〇 時，母材或溶接金屬其中EI值較小者之腐触速度增加， 而在硫酸環境下，產生選擇性之加速腐蝕。。因而，為防 止此種炫接接頭之選擇性加速腐韻，宜令丨ΔΕΙ |在20 36 200303929 玖、發明說明 以下。 步依需要添 於本發明之溶接接頭之炫接金屬可進_ 力口 Cr、N、Ni、A1 〇 4 I/O 上乂 上。鈇. :由於-旦添加超過〇.5%時，特別是本發明鋼之耐· 性明顯下降，故依需要添加時’卩㈣為上限。由以Nb, Ta, V, and Ti are added at an amount of 0.005% or more, respectively, and are elements that are effective in increasing the strength of fine grains and increasing the high-temperature strength. However, once it exceeds 0.1%, its effect is saturated. Therefore, the limits are 0-005 ~ 0.1%, respectively. When 15 W is added above 0.05%, it has effects on the high temperature strength and hydrochloric acid resistance, and these effects are saturated at 1%, so the range is ^ Φ 0. 05 ~ 1% 〇 Another 'Yu Xuan When the carbonitrides of Nb, Ta, V, Ti, and W are excessively added to the joining metal to form an element group, the resistance to sulfuric acid corrosion of the welded joint of the present invention is hindered. That is, "these elements have the effect of reducing the amount of Mo in the sulfuric acid resistance limit", and the degree can be adjusted by the following Mo equivalent (Moeq). Moq (% by mass) = Mo% + 5.1x (Nb% + Ta%) + 4.2 x V% + 9.3x Ti + 0.5x w%. When adding Nb, Ta, V, Ti, and W, the sulfur resistance does not hinder the sulfur resistance. 35 200303929 发明, description of the limit The balance of the ingredients is obtained by expanding the acid corrosion resistance index EI instead of the above AI. EI is a function of Sb, C, Moeq (mass%), and is obtained by the following formula <2>. EI / 10000-0.0005 + 〇.〇45x Sb%-C% x Moeq &lt; 2 &gt; 5 According to the purpose of the product 'When adding Ta, V, Ti, W in combination, if EI2 0 is satisfied, then excellent performance can be obtained at the same time Resistance to hydrochloric acid and sulfuric acid. That is, the graph of '7 shows the relationship between the EI value and the sulfuric acid corrosion rate. As shown in this graph, it can be seen that when the expanded acid corrosion resistance index EI is above 0, the sulfuric acid resistance is significantly improved. Therefore, sb, c, and Mo are added to the fused 10 metal of the fusion joint of the present invention so that the expansion acid resistance index EI obtained by the above-mentioned formula (2) becomes 0 or more. In addition, when one or more of Nb, Ta, V, Ti, and W are added, the selected corrosion resistance index of the welded joint is evaluated without using the aforementioned AI, and the expanded acid corrosion resistance index EI is used to obtain a more excellent one. Weld 15 connectors. The expansion corrosion resistance index I of the welded joint I △ EI I is specified by the expansion acid resistance index EI (base metal) of the base material φ and the expansion acid resistance index EI (welded metal) of the weld metal as specified in the following formula <4>. | ΔΕΙ | — | EI (base metal) —EI (welded metal) <4> '' 帛 U head system shows the relationship between ΔΔΙ 丨 and the sulfuric acid residue rate of the base metal and the molten metal, as described above! As shown in the figure i, when I Δ EI i exceeds 20, the corrosion rate of the base material or the dissolving metal with the smaller EI value increases, and selective accelerated corrosion occurs in the sulfuric acid environment. . Therefore, in order to prevent the selective accelerated decay of such dazzling joints, it is desirable to make ΔΔΙΙ in 20 36 200303929, the description of the invention is as follows. Step by step, the dazzle metal added to the welded joint of the present invention can be inserted into the Cr, N, Ni, A1 04 I / O caps.鈇.: When-once added exceeds 0.5%, the resistance and resistance of the steel of the present invention are significantly reduced. Therefore, when necessary, 卩 ㈣ is the upper limit. By

南耐硫酸性及耐舰性之點，轉Cr含有量限定在〇1% 以下，進一步，以不添加最佳。 〇In terms of sulfuric acid resistance and ship resistance, the content of Cr is limited to 0% or less, and it is best not to add it. 〇

Ni係具有使耐鹽酸性提高之作用之元素，以本發明 1〇之Cu與Sb之添加所產生之炫接金屬之高溫裂紋為目又的 二而依需要添加〇.1%以上’由於即使添加超過1%，該 等效果仍飽和，故以0 ％盍 U為限定範圍。特別是以Q1 %〜Cu% 〇·5之範圍為佳。 Ν為具有提高鹽酸性之作用之不可避免之雜質元素， 依需要添加0.001%以上，由於超過請％之過度添加即Ni is an element that has the effect of improving the hydrochloric acid resistance. The high temperature crack of the dazzling metal generated by the addition of Cu and Sb in the present invention is added to 0.1% or more as necessary. Adding more than 1%, these effects are still saturated, so 0% 盍 U is the limited range. In particular, a range of Q1% to Cu% 0.5 is preferable. Ν is an unavoidable impurity element that has the effect of improving hydrochloric acid. Add 0.001% or more as necessary.

為炫接金屬之氣孔產生或溶接金屬勒性降低之原因，故以 0.001〜0.02%為限定範圍。 Α1依需要添加0.005%以上，由於當添加超過〇 ι% ，則損害耐鹽酸性及熔接接頭之韌性，故令其範圍為 20 0.005〜0.1% 〇 又，於本發明熔接接頭之熔接金屬依需要添加ca、For the reason that the porosity of the dazzling metal is generated or the metal is reduced in weldability, the limited range is 0.001 to 0.02%. Α1 is added as much as 0.005% or more. When it is added more than 0%, the hydrochloric acid resistance and the toughness of the welded joint are impaired, so the range is 20 0.005 ~ 0.1%. Also, the welded metal in the welded joint of the present invention is required. Add ca,

Mg、Ce、La、REM、B 〇Mg, Ce, La, REM, B 〇

Ca、Mg、REM、B因洗淨性提高或粒徑之細微化， 而有助於熔接接頭之熔接金屬之韌性，由於添加至上限對 37 200303929 玖、發明說明 耐飯性並不造成影響，故依需要分別添加〇 〇〇〇2以上， 其效果在Ca、Mg、Ce、La、REM超過0.01% ，B超過 〇·〇〇5%時，方對耐蝕性造成不良影響，故Ca、Mg、Ce、 La、REM係以〇·_2〜〇 〇1 %為限定範圍，b係以 5 0·0002〜0.005%為限定範圍。 又’依需要於本發明熔接接頭之熔接金屬添加Sll、 Pb ' Se 、 Te 、 Bi 。Ca, Mg, REM, and B contribute to the toughness of the weld metal of the welded joint due to improved detergency or finer particle size. The addition of Ca, Mg, REM, and B to the upper limit affects 37 200303929. Therefore, it is necessary to add more than 20000, if the effect is more than 0.01% Ca, Mg, Ce, La, REM, and B exceeds 0.005%, it will have a negative impact on the corrosion resistance, so Ca, Mg , Ce, La, and REM are limited to a range of 0.2% to 0.001%, and b is limited to a range of 50.0002 to 0.005%. Furthermore, S11, Pb'Se, Te, Bi are added to the fusion metal of the fusion joint of the present invention as required.

Sn、Pb具有提高熔接焊道之研磨機保養性之作用， 為得到此效果，須添加0.01%以上，由於一旦含有量超過 1〇 〇·3% ，則熔接金屬之韌性降低，故令其含有量之上限為 0.3 〇Sn and Pb have the effect of improving the maintainability of the grinder for the weld bead. In order to obtain this effect, it must be added above 0.01%. Once the content exceeds 10.0%, the toughness of the weld metal is reduced, so it contains The upper limit of the amount is 0.3 〇

Se、Te、Bi具有更提高耐酸性之作用，為得到此效 果，須分別添加0.001%以上，由於各自之含有量一旦超 過〇·1% ，則導致熔接金屬之韌性降低，故令其各自之含 15 有量之上限為0.1% 。 又，依需要，於本發明熔接接頭之熔接金屬添加Ag 、：Pd。 …凰回徵反^敗碾土兄下之熔接接 20 碩之熔接金屬之耐蝕性，為得到其效果，分別須添加 0·〇〇1%以上，由於其各自之含有量一旦超過〇 5% 、〇 1 °/0 ，則成本增加，且熔接施工性下降，故分別令其含有量 之上限為0.5% 、0.1% 。 。連 而言 其次，就本發明之鋼之較佳製造方法加以說明 績鑄造或分塊壓延後之再加熱溫度由壓延負荷之觀點 38 200303929 玖、發明說明 ’以ιοοοχ：以上為佳，由於一旦再加熱超過13〇〇。〇時， 則使結晶粒之粗大化、脫碳及氧化鏽蝕之增大顯著，故令 其範圍為1000〜1300°C即可。 由於熱軋之加工溫度在800°c以下，並無法避免雙煉 5化，反之，一旦超過1000 °c則變成粗粒，故其範圍以 800〜1000°C為佳。之後，為以顯微組織為肥粒鐵主體，而 予以空氣冷卻。然而，由於在所謂薄板之熱軋中，有冷卻 速度過快之疑慮，故以600〜750°C捲繞後，則予以空氣冷 卻或爐内冷卻。此外，製造冷軋鋼板時，熱軋空氣冷卻後 10 ，以30〜90%之壓延率，實施冷札後，宜以7⑼〜9〇〇。〇進 行連續退火或封盒退火。 本發明鋼在使用時，舉例言之，製造成鋼塊後，亦 可藉熱軋、锻造、冷軋、伸線作成鋼板或棒線、模具鋼、 月'i板專任意形狀而使用。進一步，亦可以加壓等將該等形 15成預定之形狀，進一步予以加工或溶接，製成製品。又， 亦可將鋼板作為電焊鋼管，首先形成鋼管之形狀後，藉2 次加工及熔接等使用於製品。又，亦可包含其他製程，而 依成本或既有製造設備之限制，選擇最適合之製品製造製 程’不論選擇何種製造製程，可製造本發明鋼即可。 20 又’本發明之熔接接頭依各種熔接方法使用上述本 發明鋼時’可獲得優異之耐硫酸腐蝕性及耐鹽酸腐蝕性， 而極為適合。本發明之熔接接頭如上述，係藉將形成各種 形狀之鋼材或將該鋼材藉加工形成預定形狀之鋼材依各種 熔接方法熔接而得。通常，依需要將上述鋼材作成適當之 200303929 玖、發明說明 坡口幵/狀後’可使用諸如在大氣下或在使用了保護氣體之 環境下之電弧熔接、潛弧熔接等之電弧熔接、電漿焊接、 電子束焊接等各種熔接方法來熔接。此時，藉選擇焊條之 〜線纟干、、’糸之組成或焊條之被覆材、焊劑之組成、溶接環 5境等，調整熔接金屬之組成，而可形成本發明之熔接接頭 0 另，本發明鋼及炼接接頭亦可為以電錢法或包層法 等方法使含有必要元素之合金附著於適當組成之合金表面 · ,藉熱處理等適當之處理使元素擴散，而作為具有申請範 10圍記載之化學組成之表面之鋼材。又，當使用本發明鋼及 熔接接頭時，並非為妨礙表面處理、噴漆、電防腐蝕之併 用、腐蝕抑制劑之投入等任何防蝕方法之使用者，且該等 防蝕方法之使用並不超出本發明之範圍者。 實施例 15 第1實施例 將表1、表2(纟買表1之1)、表3 (續表1之2)、表 4 (繽表1之3 )所示之化學組成之鋼以5 〇kg真空溶融濟 熔製，以鑄塊作為鋼片，而將之再加熱後，在加工溫度 800 C〜900 C之範圍，熱軋為板厚6mm後，予以空氣冷卻 2〇 。自該熱軋板選取腐蝕試片及拉伸試片。進一步，有關一 部份之試驗鋼方面，將熱軋板酸洗後，冷軋為板厚1.2mm 後，在700°C下以鹽浴退火60秒，試作冷軋鋼板，而選 取拉伸試片。 40 200303929 玫、發明說明 表1試驗材之化學成份 钶黏薄唞：讲徽sws®^ ! · 潫爇笤 ϊ S ι ^ &gt; ts3 Μ &gt; Η·* 00 — -Nj &gt; CD &gt; Μ cn &gt; Μ 厶 &gt; u &gt; Μ to &gt; — — &gt; φ &gt; 03 &gt; s 5 &gt; &gt; CO to »—· ο Ο Ο cn ο ο C0 ο ο ο UD ο ο ο ο ω ο S ο ο ο ο U ο ο ο ω ο ο UD Ο ο § ο ο § ο 〇 s cn o o ID o o — o o c — o ο ο ο ο W-* ο ο ο φ ο ο S ο ο ο 公 ω ο KJ cn ο ϋη ο Μ CH ο ND ϋΐ ο κ&gt; cn ο Μ cn Ο Ο ο ΙΌ tn σ to υ\ o 私 M o CO in o cn σ w cn ο U ω ο to ►-* •ο W cn ρ ο W 00 Μ· ο to ο CO cn ο C0 ϋΐ Ο 〇&gt; cn Ο CC cn ο α&gt; ο ο tn Ο ο cn cn ο CO Ln ο W tn o »Cw tn 〇 o o ui cn o ui ο Ο) W ο οι ο 釦 to ο to X： 3 ο ο ο φ ο ο 一 ο ο HU ϋι Ο Ο Η-1 ο ο — ο ο ο CTi Ο ο ο cn Ο ο Μ tsD Ο ο — U1 Ο Ο tn cn O o M cn o o ΓΟ o o — cn ο ο cn ο ο ο 00 ο ο »-* ο ο ① ο C Νϊ Μ &quot;0 ο ο ο KD ο ο ο W ο ο C0 ο ο CN5 ο ο 5 Ο ο 03 ο ο § Ο ο § ο ο CX1 cn ο ο μ ο o o ¢0 o o o g o o cn ο ο — ο ο ο ；〇 cn ο ο — to ο ο — ο ο Η tn ΙΛ Ο ω ο ο W ο CO Ο to αι ο α&gt; cn Ο CO οι ο ω υι ο ο &lt;χ&gt; ο U» ο u&gt; Μ o CD o to o u&gt; co ο ω 各 ο CO ：Μ ο 0&gt; ο ο W ο ο CO η C 1 1 1 I I I I 1 1 1 η-· ω 1 o 00 ο -s3 cn Ο φ cn ο cx&gt; 00 1 1 ο ΙΟ ο ο ο 00 ο 00 ο 卜 Cjn ο 〇ι ο CO 0Q ο ω 00 ο S ο S ο Η* α» 〇 o o o — tD o to Ο to ο Μ cn ο Η-· cn •ο — cn ΙΟ § X ο Η-1 ο ο 一 cn ο ο Η*« Cn α Ο Ο ο Ο ο cn Ο I ο cn 0\ ο ο Η ο ο ο ο W ο ο ο W ο 1 1 •o o oa o Ο Ο Ο I 1 1 1 κ ο ί .ο ο to cn ο § cn 1 1 ο ο Ο •ο ο Η- ο ο ο :Μ ο ο to Cn ο S ο o o o o M M 〇 1 ο κ ο ο § ο 1 ρ Μ ο ο •ο ο 00 cr ο ο Μ ο g ο ο CO μ ο ο ο ο ο W ο Ο g οο ο ο Ν&gt; α&gt; ο C Ο ο ο Ν&gt; ο ο to o 0 to 01 〇 o ω cn o o u&gt; o ο g cn ο ο U) tn ο S ο ο ο CC Cn ο ο to cn &gt; Ο ο ο ο ο ο ο tU- ο ο ο “ ο ο ο ο έ ο ο ο σ ο ο ο 仏 tji ο ο |U υ\ ο ο α cn ο ο ο ο ο ο ο ο 払 cn o o 2 Crr O o o 釦 Cn o o o lU yi Ο Ο ο 各 cn ο ο ο ο ο ο 私 Cri C ο S ο ο ο 2 cn 1 ί I 丨 » 1 I 1 ! ) 1 1 i I 1 1 1 1 ζ cr 1 1 1 丨 1 1 1 1 1 I 1 1 1 1 1 ! 1 1 &lt; 1 1 1 1 I 1 1 \ 1 1 1 1 1 1 1 Ο Ο ο 1 1 ί 1 03 •ο ο ο μα ο 1 1 1 1 I \ 1 I 1 ⑺ D p 〇 1 CO Ρ ο ο 1 1 1 1 Μ I 1 一 ο 1 00 Ui : 1 C0 CO CO ϋ! Λ Ο ο ρ m 1 Γ4 ο I 00 •ο Η Μ Ο 00 s tn 〇\ o cn 〇 1 1 o 1 一 00 ο σ cn •ο ο in cn &gt; I U) — ο (1¾¾%) 41 200303929 玫、發明說明 表2試驗材之化學成份（續表1之1) CX3 a cxy c-o CCT c&gt;o w C〇 σσ CO oo oo oo CO cr&gt; CO cn CO CO C-O CO ro c» ηχ&gt; cr&gt; cz&gt; c-o c=&gt; c^&gt; C=D- k c=&gt; C=&gt; g cr&gt; i €=&gt; g cr&gt; § &lt;=&gt; b c=&gt; c=&gt; CO c=&gt; &lt;z&gt; g cz&gt; c=&gt; cr· cr&gt; b G&gt; az&gt; &lt;r^ c=&gt; ΙΌ C-ri &lt;=&gt; tO cr\ cr&gt; ¢0 cr» c=&gt; Cs〇 cr% &lt;=&gt; cr、 to CJr% p t&gt;o cn CO Cjr% cz&gt; , t&gt;o Cl、 l&gt;〇 ΟΙ CO cr* &lt;=&gt; eo cr» G&gt; to cr» &lt;=&gt; to CJr% OO C=&gt; c=&gt; S c=&gt; 〇&gt; &lt;=&gt; CJ·% C=&gt; Cjri C=&gt; CO· c-n C=&gt; CO on &lt;=&gt; ext &lt;=&gt; c^&gt; c=&gt; art C=&gt;丨 CJfi 〇 c» 5&gt; CO CT1 C=&gt; CO cr« K= c=&gt; I 〇&gt; cr&gt; cr&gt; c=&gt; c=&gt; cr&gt; &lt;=&gt; c=&gt; cr&gt; C=f cz&gt; I c=&gt; G&gt; cr&gt; C3 b g 5» cr&gt; C=&gt; 穹 -Ό cz&gt; cz&gt; cp c=&gt; cr&gt; c=&gt; s c^&gt; i c&gt; cr&gt; eg cz&gt; cp c=&gt; § cr&gt; c=&gt; ►—* c=&gt; &lt;^&gt; 户 IS &lt;=&gt; C=P t-o- 户 ； CO ; cn CD CjO c=&gt; oo cz&gt; 03 s c=&gt; CmS c=&gt; K—« o CO Or% c=&gt; CO Cj〇 &lt;=&gt; CjO CO 5=3 c^» 5=&gt; oo i t 1 1 1 t 1 1 9 i 1 k « 1 tr-&gt; cr&gt; CO· oo cz&gt; OD c=&gt; oo oo cr&gt; c=&gt; b cz&gt; oo cr&gt; CO oo fz&gt; i oo cr&gt; oo cr&gt; oo c&gt; oa 5» 4~*&gt; OO c=&gt; oo ：»E； c=&gt; : cr« o P 〇 cr&gt; t&gt;o cr&gt; r〇f c=&gt; G&gt; c=s b c=&gt; c=&gt; g c=d ΟΛ C-T1 c=&gt; ： ΙΓΟ C^rt G&gt; \ c» CO emt c=&gt; c=&gt; CO cr&gt; cr&gt; cr&gt; co c=&gt; 蓬 C3&gt; CZ&gt; i~‘ &lt;==&gt; cr&gt; JZ&gt; ar&gt; c=&gt; cr&gt; g cr&gt; g 5==1 •—A c=&gt; p&gt; |C&gt; cr&gt; g 〇&gt; c=&gt; &lt;=» S cr&gt; 1—^ &lt;z&gt; c=&gt; * c=&gt; b oo k oo cr&gt; &lt;=&gt; Cv〇 OO c=&gt; b oo &lt;=&gt; k oo &lt;=&gt; cr&gt; oc» oo c=&gt; cr&gt; t%D OO cz&gt; h CO cs» 运 CO c=&gt;- t&gt;〇 〇〇 c=&gt; h oo 运 oo c=&gt; cr» CO oo c=&gt; b oo cr&gt;丨 i cn c=&gt; o crt c-o Οτι cr&gt; c=&gt; CJr» c» 1 Cjm &lt;=&gt; 1 Cr% cr&gt; k CO cr* cr&gt; i cn 1 cn c=&gt; k CO err c=&gt; k CO Cjr% On» c» o cr« cz&gt; M CJrt SK： 1 o g cr&gt; 1 C=&gt; 1 1 c^&gt; c=&gt; c=&gt; cr» I i t 1 i c=&gt; b t 1 cz&gt; c^&gt; c=&gt; cp 1 c=&gt; k cry i 1 I 31 &lt; 1 &lt;r&gt; o c=&gt; g cn O g P 隹 c^&gt; &lt;LTt % . 1 1 1 l ‘ i 1 r 1 t I * t 1 1 1 1 1 1 1 cm t^o c-n l CO c=&gt; 4 cr» C-rt ά c=&gt; cio O^f CT% ar&gt; Cjrt 一 o 丄 ρα f t Cjrr C^&gt; Λ crt t ert 1 OO nm (姆1。/0)Se, Te, and Bi have the effect of improving the acid resistance. To obtain this effect, it is necessary to add more than 0.001% respectively. Once their respective content exceeds 0.1%, the toughness of the weld metal will be reduced, so their respective The upper limit of 15 quantities is 0.1%. In addition, Ag and: Pd are added to the fusion metal of the fusion joint of the present invention as needed. … Return to the anti-corrosion of the welded metal of the welded metal under the crushing earth. In order to obtain the effect, the corrosion resistance of the welded metal must be more than 0.001%, because once their respective content exceeds 5% , 〇1 ° / 0, the cost increases, and the weldability decreases, so the upper limit of the content is 0.5% and 0.1%, respectively. . Secondly, the preferred method of manufacturing the steel of the present invention will be explained. The reheating temperature after casting or block rolling is from the viewpoint of rolling load. 38 200303929 发明, description of the invention 'It is better that the above is better. Heated over 13,000. 〇, the coarsening of crystal grains, decarburization and oxidative rust increase significantly, so the range can be 1000 ~ 1300 ° C. Since the hot-rolling processing temperature is below 800 ° c, double smelting cannot be avoided. On the contrary, once it exceeds 1000 ° c, it will become coarse grains, so its range is preferably 800 ~ 1000 ° C. After that, the microstructure was used as the main body of the ferrous iron and air-cooled. However, in the so-called hot rolling of thin plates, there is a concern that the cooling rate is too fast, so after being wound at 600 to 750 ° C, air cooling or furnace cooling is performed. In addition, when manufacturing a cold-rolled steel sheet, the hot-rolled air is cooled at a rolling rate of 30 to 90%, and after cold rolling, it is preferably 7 to 900. 〇 Perform continuous annealing or box annealing. When the steel of the present invention is used, for example, after being manufactured into a steel block, it can also be made into any shape by using hot rolling, forging, cold rolling, and drawing wire to form a steel plate or a bar wire, die steel, and moon'i plate. Further, these shapes may be formed into a predetermined shape by pressing or the like, and further processed or melted to form a product. In addition, a steel plate may be used as an electric welded steel pipe. After forming the shape of the steel pipe first, the steel plate may be used in a product through secondary processing and welding. In addition, other processes may be included, and depending on the cost or the limitation of existing manufacturing equipment, the most suitable product manufacturing process is selected 'regardless of which manufacturing process is selected, the steel of the present invention may be manufactured. 20 In addition, when the above-mentioned steel according to the present invention is used for the fusion joint of the present invention by various welding methods, excellent sulfuric acid corrosion resistance and hydrochloric acid corrosion resistance are obtained, which is extremely suitable. As described above, the welded joint of the present invention is obtained by welding various steel materials into various shapes or processing the steel material into a predetermined shape by various welding methods. Generally, the above-mentioned steel materials are made into the appropriate 200303929, as described in the description of the bevel 状 / shape, as required. Arc welding, submerged arc welding, etc., such as in the atmosphere or in an environment where a protective gas is used, can be used. Welding by various welding methods such as slurry welding and electron beam welding. At this time, by selecting the wire of the electrode, the composition of the wire or the coating material of the electrode, the composition of the flux, the environment of the welding ring, etc., and adjusting the composition of the welding metal, the welding joint of the present invention can be formed. The steel and the smelting joint of the present invention can also be used to apply an alloy containing necessary elements to the surface of an alloy of an appropriate composition by an electric money method or a cladding method. The surface of the steel of the chemical composition of the 10th round. In addition, when using the steel and welded joint of the present invention, it is not intended to prevent users of any anti-corrosion methods such as surface treatment, painting, combined use of electrical anti-corrosion, and investment of corrosion inhibitors, and the use of these anti-corrosion methods does not exceed The scope of the invention. Embodiment 15 In the first embodiment, steels with chemical compositions shown in Table 1, Table 2 (Buy Table 1-1), Table 3 (Continued Table 1-2), and Table 4 (Bin Table 1-3) were used. 〇kg vacuum melting and melting, using an ingot as a steel sheet, and reheating it, hot-rolled to a thickness of 6 mm at a processing temperature in the range of 800 C to 900 C, and then air-cooled for 20%. Corrosion test pieces and tensile test pieces were selected from the hot-rolled sheet. Further, for a part of the test steel, after pickling the hot-rolled steel sheet, cold-rolling it to a thickness of 1.2 mm, annealing it at 700 ° C in a salt bath for 60 seconds, making a cold-rolling steel sheet, and selecting a tensile test sheet. 40 200303929 Rose, description of invention Table 1 Chemical composition of test material 钶 adhesive 唞: Swish® ^! · 潫 爇 笤 ϊ S ^ &gt; ts3 Μ &gt; Η · * 00 — -Nj &gt; CD &gt; Μ cn &gt; Μ 厶 &gt; u &gt; Μ to &gt; — — &gt; φ &gt; 03 &gt; s 5 &gt; &gt; CO to »— · ο Ο ο ο C0 ο ο UD ο ο ο ο ο ο ο ω ο S ο ο ο ο U ο ο ω ο ο UD Ο ο § ο ο § ο ο s cn oo ID oo — ooc — o ο ο ο ο W- * ο ο φ ο ο ο ο ο ο ο Public ω ο KJ cn ο ϋη ο Μ CH ο ND ο ο κ &gt; cn ο Μ cn Ο Ο ο ΙΌ tn σ to υ \ o Private M o CO in o cn σ w cn ο U ω ο to ►- * • ο W cn ρ ο W 00 Μ · ο to ο CO cn ο C0 ϋΐ 〇 〇 &gt; cn Ο CC cn ο α &gt; ο ο tn Ο ο cn cn ο CO Ln ο W tn o »Cw tn 〇oo ui o ui ο Ο) W ο οι ο buckle to ο to X: 3 ο ο ο φ ο ο one ο ο HU ϋι Ο Ο Η-1 ο ο — ο ο ο CTi Ο ο ο cn Ο ο Μ tsD Ο ο — U1 ο Ο tn cn O o M cn oo ΓΟ oo — cn ο ο cn ο ο ο 00 ο ο »-* ο ο C Νϊ &quot; 0 ο ο ο KD ο ο ο W ο ο C0 ο ο CN5 ο ο 5 Ο ο 03 ο ο § Ο ο § ο ο CX1 cn ο ο μ ο oo ¢ 0 ooogoo cn ο ο — ο ο ο; cn ο ο — to ο ο — ο ο Η tn ΙΛ Ο ω ο ο W ο CO Ο to αι ο α &gt; cn Ο CO οι ο ω υι ο ο &lt; χ &gt; ο U »ο u &gt; Μ o CD o to o u &gt; co ο ω each ο CO: Μ ο 0 &gt; ο ο W ο ο CO η C 1 1 1 IIII 1 1 1 η- · ω 1 o 00 ο -s3 cn Ο φ cn ο cx &gt; 00 1 1 ο ΙΟ ο ο ο 00 ο 00 ο Bu Cjn ο 〇ι ο CO 0Q ο ω 00 ο S ο S ο Η * α »〇ooo — tD o to 〇 to ο Μ cn ο Η- · cn • ο — cn ΙΟ § X ο Η-1 ο ο one cn ο ο Η * «Cn α Ο Ο ο Ο ο cn Ο I ο cn 0 \ ο ο Η ο ο ο ο W ο ο ο W ο 1 1 • oo oa o Ο Ο Ο Ο I 1 1 1 κ ο ί .ο ο to cn ο cn cn 1 1 ο ο Ο • ο ο Η- ο ο ο: Μ ο ο to Cn ο S ο oooo MM 〇1 ο κ ο ο § ρ Μ Μ ο ο • ο ο 00 cr ο ο Μ ο g ο ο CO μ ο ο ο ο ο W ο Ο g οο ο Ν &gt; α &gt; ο C Ο ο ο Ν &gt; ο ο to o 0 to 01 〇o ω cn oo u &gt; o ο g cn ο ο U) tn ο S ο ο ο CC Cn ο ο to cn &gt; Ο ο ο ο ο ο tU- ο ο ο ο "ο ο ο ο ο ο ο ο σ ο ο ο 仏 tji ο ο | U υ \ ο ο α cn ο ο ο ο ο ο ο ο ο ο cn oo 2 Crr O oo buckle Cn ooo lU yi OO OO ο each cn ο ο ο ο ο ο Private Cri C ο S ο ο ο 2 cn 1 ί I 丨 »1 I 1!) 1 1 i I 1 1 1 1 1 ζ cr 1 1 1 丨 1 1 1 1 1 I 1 1 1 1 1! 1 1 &lt; 1 1 1 1 I 1 1 \ 1 1 1 1 1 1 1 Ο Ο ο 1 1 ί 1 03 • ο ο ο μα ο 1 1 1 1 I \ 1 I 1 ⑺ D p 〇1 CO Ρ ο ο 1 1 1 1 Μ I 1 1 ο 1 00 Ui: 1 C0 CO CO ϋ! Λ Ο ο ρ m 1 Γ4 ο I 00 • ο Η Μ Ο 00 s tn 〇 \ o cn 〇1 1 o 1 One 00 ο σ cn • ο ο in cn &gt; IU) — ο (1¾¾%) 41 200303929 Rose, invention description Table 2 Chemical composition of test materials (continued in Table 1-1) CX3 a cxy co CCT c &gt; ow C. σσ CO oo oo oo CO cr &gt; CO cn CO CO CO CO ro c »ηχ &gt; cr &gt; cz &gt; co c = &gt; c ^ &gt; C = D- kc = &gt; C = &gt; g cr &gt; i € = &gt; g cr &gt; § &lt; = &gt; bc = &gt; c = &gt; CO c = &gt; &lt; z &gt; g cz &gt; c = &gt; cr · cr &gt; b G &gt; az &gt; &lt; r ^ c = &gt; ΙΌ C-ri &lt; = &gt; tO cr \ cr &gt; ¢ 0 cr »c = &gt; Cs〇cr% &lt; = &gt; cr, to CJr% p t &gt; o cn CO Cjr% cz &gt;, t &gt; o Cl , L &gt; 〇ΟΙ CO cr * &lt; = &gt; eo cr »G &gt; to cr» &lt; = &gt; to CJr% OO C = &gt; c = &gt; S c = &gt; 〇 &gt; &lt; = &gt; CJ ·% C = &gt; Cjri C = &gt; CO · cn C = &gt; CO on &lt; = &gt; ext &lt; = &gt; c ^ &gt; c = &gt; art C = &gt; 丨 CJfi 〇c »5 &gt; CO CT1 C = &gt; CO cr« K = c = &gt; I 〇 &gt; cr &gt; cr &gt; c = &gt; c = &gt; cr &gt; &lt; = &gt; c = &gt; cr &gt; C = f cz &gt; I c = &gt; G &gt; cr &gt; C3 bg 5 »cr &gt; C = &gt; dome-Ό cz &gt; cz &gt; cp c = &gt; cr &gt; c = &gt; sc ^ &gt; i c &gt; cr &gt; eg cz &gt; cp c = &gt; § cr &gt; c = &gt; ►-* c = &gt; &lt; ^ &gt; user IS &lt; = &gt; C = P to- user; CO; cn CD CjO c = &gt; oo cz &gt; 03 sc = &gt; CmS c = &gt; K— «o CO Or% c = &gt; CO Cj〇 &lt; = &gt; CjO CO 5 = 3 c ^» 5 = &gt; oo it 1 1 1 t 1 1 9 i 1 k «1 tr- &gt; cr &gt; CO · oo cz &gt; OD c = &gt; oo oo cr &gt; c = &gt; b cz &gt; oo cr &gt; CO oo fz &gt; i oo cr &gt; oo cr &gt; oo c &gt; oa 5 »4 ~ * &gt; OO c = &gt; oo:» E; c = &gt;: cr «O P 〇cr &gt; t &gt; o cr &gt; r〇fc = &gt; G &gt; c = sbc = &gt; c = &gt; gc = d ΟΛ C-T1 c = &gt;: ΙΓΟ C ^ rt G &gt; \ c» CO emt c = &gt; c = &gt; CO cr &gt; cr &gt; cr &gt; co c = &gt; pon C3 &gt; CZ &gt; i ~ '&lt; == &gt; cr &gt; JZ &gt; ar &gt; c = &gt; cr &gt; g cr &gt; g 5 == 1 • —A c = &gt; p &gt; | C &gt; cr &gt; g 〇 &gt; c = &gt; &lt; = »S cr &gt; 1— ^ &lt; z &gt; c = &gt; * c = &gt; b oo k oo cr &gt; &lt; = &gt; Cv〇OO c = &gt; b oo &lt; = &gt; k oo &lt; = &gt; cr &gt; oc »oo c = &gt; cr &gt; t% D OO cz &gt; h CO cs »transport CO c = &gt;-t &gt; 〇〇〇c = &gt; h oo transport oo c = &gt; cr» CO oo c = &gt; b oo cr &gt; 丨 i cn c = &gt; o crt co Οτι cr &gt; c = &gt; CJr »c» 1 Cjm &lt; = &gt; 1 Cr% cr &gt; k CO cr * cr &gt; i cn 1 cn c = &gt; k CO err c = &gt; k CO Cjr% On » c »o cr« cz &gt; M CJrt SK: 1 og cr &gt; 1 C = &gt; 1 1 c ^ &gt; c = &gt; c = &gt; cr »I it 1 ic = &gt; bt 1 cz &gt; c ^ &gt; c = &gt; cp 1 c = & g t; k cry i 1 I 31 &lt; 1 &lt; r &gt; oc = &gt; g cn O g P 隹 c ^ &gt; &lt; LTt%. 1 1 1 l 'i 1 r 1 t I * t 1 1 1 1 1 1 1 cm t ^ o cn l CO c = &gt; 4 cr »C-rt ά c = &gt; cio O ^ f CT% ar &gt; Cjrt one o 丄 ρα ft Cjrr C ^ &gt; Λ crt t ert 1 OO nm (m. / 0)

42 200303929 玫、發明說明 表3試驗材之化學成份（續表1之2) 锒鉱燁啪‘讲鄉适N·鋇豳李 m -H 0 CO to r*&gt; to — Q o r*i rr* -&lt;» cr&gt; 2 cn CTi LO r&gt; to tr&gt; C&quot;&gt; S CO Q o cn 2 cTi CO 〇 ra o o 0 1 o 〇 o o &lt;=&gt; d? CD o 〇&gt; ； o C3 C3 CO o o 〇 〇» o o rr&gt; 〇 § o s o 5¾ o o 二 ►-* g fc—* 〇» CD CO CD o 岩 s o o t^&gt; a&gt; 〇 2 g CO o c*5 o CO g CO s o g g to g 〇 e&gt; o o o 〇 C5 o o o o 1 o o o p s oo to cn to to tn ro cn lO Cn CO cn CO cn to cn IS3 ex* to cn css cn ΙΌ cn to l\3 cn ΓΟ — Cn5 to CO to CO ro cn to cn cn O •CO cn p CO Cn o CO at 〇 CSX o o CO cn 〇 L, tn 〇 C&gt;9 Cn 〇 CO cn O 03 cn p&gt; oo u&gt; p CO CO p ca cn 0 oo cn •o CO cn o CO cn o v£^ cn o L, cn p CO cri o o 一 cn p *£U p CO a*· p cn w： o CZ&gt; CD o o o 〇 C5 O O o o o CD 〇 o o &lt;=&gt; o u&gt; n〇 o CD CT&gt; o o o &lt;z&gt; o CD o o 〇 s 〇 o 〇 O 2 o o o s o o o 茳 o o cr&gt; o 办 o cn o cn g cn o CD s CD 心 o o o o cp o o o o o o o &lt;=&gt; o o CD o &lt;=&gt; g CO CD o — cn ⑺ cr&gt; 5 Ξ o o ►—* C5 o i—* i〇 o CS s o 〇t o o s a&gt; 2 Cn g CO o ·—· o 一 o 〇&gt; CO o g C5 s g OCJ o w g CO 〇 S o cn 〇 CD o CD o o cr&gt; cr&gt; o C3 CD o o o o o o o o c=&gt; 一 ts5 CO CO to CO UD OO t-&gt; CO 一 UJ CO CO to CO CO Ol tri tn tn an 含 岩 to CO c-ώ to to CO 〇 o o o 2 o o o o o C3 CD o O 八 八 八 八 s ✓s 八 ¢-¾ 2 3 2 o o — 3 o ♦—* 2 c=&gt; CD tsD cn s o tO s s s s s CD CD o &lt;z&gt; o CD CD o o &lt;z&gt; CD C3 o ο CD 〇» o o o o o &lt;〇 o e** cn o =5=： OO oo &lt;x&gt; »c&gt;w TO CO W-* oo oo oo V-* OO OO Cn&gt; 03 ·— CO to ω CO to UD oo — o 〇&gt; CD o o 〇 o o CD CP 〇 o ο o CD to s C3&gt; o o o o o o CD o S： £ 〇&gt; CD s o s 2 o CD — o o o s Ό s c^&gt; CP CO o § o 若 s ο s o 一 o o cn o g CXI to o o s f—* s g 一 o o o CD CD o Oi e&gt; o CD c=&gt; CD o CD o o CP C5 o o o o o 〇» &lt;JD cn cr&gt; c* g CO cn cn 〇 UD cn o tx&gt; cn — ►—A UD I—* tX3 &lt;=J &lt;x&gt; cr· s cn s cn s Crt s 〇 CO UD s ►—* cri 〇 s s e-« s s im b ext o S cn o s cn o b cn CD s tn o s cn 〇 b tn 〇&gt; o cn o o to cn c&gt; s cn Oi s cn 〇 c? ro cr* CD o CO cr* 〇» o cn o s cn a&gt; o CO cn 〇 o CO ex» o o CO cn o s cn o* o CO Cn o to oo o o to oo 5=&gt; a&gt; CO oo &lt;=&gt; i 23*- p g ert 〇 〇 C&gt; g tn &lt;=&gt; g C«n O o 办 cri 〇 cr&gt; s cn •o o s g Cn c&gt; g kU. cn c=&gt; g cn P o cn 0 1 Cn &lt;z&gt; CD cn p g aw cn F5 g cn c&gt; o cn a&gt; o JU. cr» CD o s cn p o 也 cn G» g kCw cn 〇i CD o p o o oa cn c&gt; o o cn o 〇&gt; s cn 3K： 1 \ » 1 ϊ 1 1 •o 2 O Ϊ 1 1 1 1 I \ 1 1 1 1 i * 1 1 gs 1 \ i 1 隹 c=&gt; g cn 1 I t \ 1 1 1 1 1 1 1 » 1 1 1 1 t *·&lt; 1 i 1 1 J 1 • 1 1 1 隹 1 t 1 1 1 r 1 1 1 1 1 f 1 CO CD g ►—· 1 1 1 « CD o o s t 1 c&gt; o 1 i 1 1 1 1 1 1 1 t I 1 1 t 1 薛 oo oo CO 4»· to oo 之 oo CjO OO to o —a oo to ao OO oo Cn cn Cn CO cn 〇 an &lt;X5 cn cn CO o cn •Aw CO cn 仏 C?t cn cn cn &gt; ι- Ο oc m (gA%) 43 200303929 砍、發明說明 表4試驗材（續表1之4) m 钭 〇〇 〇 2 2 ar&gt; c-n C-V CO *JC^ to s o CO «JO rt* cx&gt; : &lt;n CO *&lt;l o 〇% ¢-¾ CO tn *u. 0 CO cr&gt; CO to G fc—* r*j w ¢-¾ CO CO oo s cr&gt; s cri C5 a&gt; cr&gt; o o CD C5 〇&gt; CD C5 o o 〇 o o o CD o o CD o o o* Oi CT5 CO Ο 〇&gt; CO o CO 〇t 宝 〇&gt; o CO o s o CO o o CO o o ω o CTI 〇&gt; 〇&gt; o 〇 M , s o 1—* H-* o s o CO o s 〇 s CD s O s c=&gt; s Ρ CO &lt;〇 CO ►—· o lo 1—» C3 〇〇 — 〇&gt; Lo &lt;r&gt; CaD p CO ►—Λ •o CO — o b o CO — o CO C3 L〇 — o to cr&gt; CO to c&gt; 运 〇&gt; o CO cn to cn o to cn C5 «Ν3 cn C3 to CJri c&gt; CO an C5 cn p&gt; CO tn c/&gt; 〇 〇&gt; 〇 o C5 CD o o CD o o C3 o &lt;=&gt; C3 o 〇» o o o 〇 a&gt; c=&gt; o ac UD crt ^r&gt; cn K£&gt; cr» IX&gt; cn to cn cr&gt; cn tx&gt; a*» CO tn &lt;x&gt; cn cc&gt; cn ς〇 u、 to cn to crt uc&gt; clti g CO cn OJ cn CO cn oa ot co&gt; cn CO cn ca cn Ca&gt; cn ΟΛ Cn p&gt; CT3 p&gt; o 运 〇&gt; cr&gt; CD CD 〇 cn P CD o cr&gt; a&gt; o 运 o g cn p g cn o § cr&gt; o § CT3 C5 o s CD CD g crv g cn p&gt; o — G» &lt;〇 •o &lt;3 oo o o c? o pt g cn p o s o •g cn O g CTJ g CD 〇 g cn 〇&gt; o 〇 CD 〇&gt; o 〇 C5 CD o o o o CD o o o CD 〇&gt; o 〇 &lt;r&gt; o oo CO o ts2 o to 2 ts3 CD tO 2 to o CO ro CD tND CD to 2 rc 2 卜O 〇 ts5 2 cr&gt; o 宕 OJ cn o o »—* c=&gt; 2 〇· 〇 cr&gt; 2 o c&gt; o &lt;=&gt; CO p CO CO CD CO to &lt;r&gt; CO* p* CO CO 〇&gt; GO CO p CO CO a&gt; COt c=&gt; CO ca Ol CO CO 〇&gt; CO OJ f&gt; C〇f CO p&gt; Cx&gt; CO CD CO p ω to C5 ω p ca 1—* &lt;r&gt; CO CO p CO to p CX) l\D C3 C〇 tO c&gt; CO to o CO to c&gt; CO CO &lt;rr&gt; C5 &lt;r&gt; c=&gt; c=&gt; 〇&gt; o 〇&gt; C3 o o CP CD CD o C5 o o 2 o &lt;〇 o o C? C3 o o C-3 cr* O c=? 2 〇» o 2 2 s 2 Cp o — o 2 o O K£&gt; CD — tp CD o 〇 CD o o CD 〇&gt; 〇&gt; 〇&gt; C3 o o o o CD CD c=&gt; CD o CD 〇 o CZ&gt; S ΐ*&quot;*· 〜s V—* 〜4 一 口 1—^ 〜4 »—* *〇 一 CO s 茬 GO S s ΓΟ o g o &lt;r» 〇 &lt;〇 to o &lt;o o o o 〇&gt; CD CD cr&gt; CD G&gt; o o o «〇 o o CD o o CD 〇t 0^. o o 知 CD (X^ CO o tr» s tr&gt; o Ok U^N. to cr&gt; (X&gt; Ο CO C5 cx&gt; CD s CO o to 〇&gt; C2 兰 s o 2 o CD o &lt;=&gt; 云 o 〇&gt; CD 兰 c&gt; &lt;o 〇 CD o 〇&gt; o 〇 o o o* o CD cr&gt; CD &lt;r&gt; o o CD 〇 o o o o o cy〇 cr s 〇 *—* g g ·—· g o o o ►—* o g i g E ♦—* g g 一 o 兰 c=&gt; o g Η-* o g i s o p&gt; b cn C&gt; S cn c=&gt; b CXi CD b cn p&gt; 芑 cn p&gt; k Cn 〇&gt; a&gt; t&gt;o cn p s cn CD* b C/H cr&gt; 〇&gt; eo cn cr&gt; b cn C5 art 〇» to cn CD 〇 CO cn 〇t o tS3 cn p CD o &lt;r&gt; b cn CD 〇&gt; Cs3 cn &lt;=3 &lt;〇 ΓΟ cri o ♦o ro cn &lt;=&gt; cn o to cn &lt;=&gt; s crt o b cn |〇. 0040 p&gt; 会 ·〇 o &lt;z&gt; c=&gt; 2 CD o g 兰 p CD s 〇&gt; c&gt; CD 〇&gt; c=&gt; o o o a&gt; g 兰 C=3 es Ot 〇&gt; g o c=&gt; g 〇» 含 〇( CD c=&gt; g ZJ\ CD c? s o 〇&gt; g o k *C3k. cn C&gt; k cn cr&gt; g cn C&gt; g cn o 8 tJb^ ay C&gt; § &lt;r? g cn 22： 1 i i 1 i 1 1 1 i i 1 1 1 1 1 ! i • 1 1 1 p 2 o 1 % ϊ 1 1 I \ 1 1 1 ϊ \ 1 1 1 1 1 1 \ 1 i i 1 1 1 -si 1 * i 50 2 CD 1 1 1 1 \ 1 1 1 &lt;=&gt; cn 1 1 1 1 1 ( 1 CD o S 〇i o 1 •HI 1 Ϊ 1 i | Pd:0.09 o h*-*· CO &lt;=&gt; o o b o k r*5 a» p&gt; b 〇 $ C=5 S 1 1 1 o? 运 aM CD k |oioo*o-3t!| 〇&gt; k 1 1 Ca:0.00051 薛 CO 0*1 CO CO CM CO CO CO ca pi C-Λ tsD Cn CJI CO cn CO cn CO CO 〇&gt; CO 〇〇· pn cn CO cn &lt;U&gt; Cri L, oo Cn to o »c^ oo oo p oo oa OD OO oo TO OO &gt; t CO Cn CO &lt;=3 〇〇 CO oo 〇&gt; cn CO m (鸠 io/0) 5 44 200303929 玖、發明說明 使用前述拉伸試片， 、延伸)。 -了機械性性質（拉伸強度 然後，使用前述腐餘試片，對耐鹽酸性及耐硫酸性 5 10 之種耐敍性進行了評價試驗。關於耐鹽酸性，浸潰於 3M (莫耳/升）鹽酸水溶 進行評價。 Q6小時’而依腐蚀減量 I W責於40% ^^酸水溶液6代6小42 200303929 Rose, description of invention Table 3 Chemical composition of test materials (continued in Table 1-2) Cracking 'Speaking for Country N · Barium Li M -H 0 CO to r * &gt; to — Q or * i rr *-&lt; »cr &gt; 2 cn CTi LO r &gt; to tr &gt; C &quot; &gt; S CO Q o cn 2 cTi CO 〇ra oo 0 1 o 〇oo &lt; = &gt; d? CD o 〇 &gt;; o C3 C3 CO oo 〇〇 »oo rr &gt; 〇§ oso 5¾ oo II ►- * g fc— * 〇» CD CO CD o Rock soot ^ &gt; a &gt; 〇2 g CO oc * 5 o CO g CO sogg to g 〇e &gt; ooo 〇C5 oooo 1 ooops oo to cn to to tn ro cn lO Cn CO cn CO cn to cn IS3 ex * to cn css cn ΙΌ cn to l \ 3 cn ΓΟ — Cn5 to CO to CO ro cn to cn cn O • CO cn p CO Cn o CO at 〇CSX oo CO cn 〇L, tn 〇C &gt; 9 Cn 〇CO cn O 03 cn p &gt; oo u &gt; p CO CO p ca cn 0 oo cn • o CO cn o CO cn ov £ ^ cn o L, cn p CO cri oo a cn p * £ U p CO a * · p cn w: o CZ &gt; CD ooo 〇C5 OO ooo CD 〇oo &lt; = &gt; o u &gt; n 〇o CD CT &gt; ooo &lt; z &gt; o CD oo 〇s 〇o 〇O 2 ooosooo茳 oo cr &gt; o do o cn o cn g cn o CD s CD heart oooo cp ooooooo &lt; = &gt; oo CD o &lt; = &gt; g CO CD o — cn ⑺ cr &gt; 5 Ξ oo ►-* C5 oi -* I〇o CS so 〇toos a &gt; 2 Cn g CO o · — · o a o 〇 &gt; CO og C5 sg OCJ owg CO 〇S o cn 〇CD o CD oo cr &gt; cr &gt; o C3 CD ooooooooc = &gt; one ts5 CO CO to CO UD OO t- &gt; CO one UJ CO CO to CO CO Ol tri tn tn an rocky to CO c-free to to CO 〇ooo 2 ooooo C3 CD o O ✓s eight ¢ -¾ 2 3 2 oo — 3 o ♦ — * 2 c = &gt; CD tsD cn so tO sssss CD CD o &lt; z &gt; o CD CD oo &lt; z &gt; CD C3 o ο CD 〇 »ooooo &lt; 〇oe ** cn o = 5 =: OO oo &lt; x &gt; »c &gt; w TO CO W- * oo oo oo V- * OO OO Cn &gt; 03 · — CO to ω CO to UD oo — o 〇 &gt; CD oo 〇oo CD CP 〇o ο o CD to s C3 &gt; oooooo CD o S: £ 〇 &gt; CD sos 2 o CD — ooos Ό sc ^ &gt; CP CO o § o if s ο so oo cn og CXI to oosf— * sg-ooo CD CD o Oi e &gt; o CD c = &gt; CD o CD oo CP C5 ooooo 〇 »&lt; JD cn cr &gt; c * g CO cn cn 〇UD cn o tx &gt; cn — ►—A UD I— * tX3 &lt; = J &lt; x &gt; cr · s cn s cn s Crt s 〇CO UD s ►— * cri 〇ss e- «ss im b ext o S cn os cn ob cn CD s tn os cn 〇b tn 〇 &gt; o cn oo to cn c &gt; s cn Oi s cn 〇c? ro cr * CD o CO cr * 〇 »o cn os cn a &gt; o CO cn 〇o CO ex» oo CO cn os cn o * o CO Cn o to oo oo to oo 5 = &gt; a &gt; CO oo &lt; = &gt; i 23 *-pg ert 〇〇C &gt; g tn &lt; = &gt; g C «n O o office cri 〇cr &gt; s cn • oosg Cn c &gt; g kU. cn c = &gt; g cn P o cn 0 1 Cn &lt; z &gt; CD cn pg aw cn F5 g cn c &gt; o cn a &gt; o JU. cr »CD os cn po also cn G» g kCw cn 〇i CD opoo oa cn c &gt; oo cn o 〇 &gt; s cn 3K: 1 \ »1 ϊ 1 1 • o 2 O Ϊ 1 1 1 1 I \ 1 1 1 1 i * 1 1 gs 1 \ i 1 隹c = &g; g cn 1 I t \ 1 1 1 1 1 1 1 1 »1 1 1 1 t * &lt; 1 i 1 1 J 1 • 1 1 1 隹 1 t 1 1 1 r 1 1 1 1 1 f 1 CO CD g ►— · 1 1 1 «CD oost 1 c &gt; o 1 i 1 1 1 1 1 1 1 t I 1 1 t 1 Xue oo oo CO 4 »· to oo oo CjO OO to o —a oo to ao OO oo Cn cn Cn CO cn 〇an &lt; X5 cn cn CO o cn • Aw CO cn 仏 C? T cn cn en &gt; ι- 〇 oc m (gA%) 43 200303929 Cutting, invention description Table 4 test material (continued in Table 1 to 4) m 钭 〇〇〇2 2 ar &gt; cn CV CO * JC ^ to so CO «JO rt * cx &gt;: &lt; n CO * &lt; lo 〇% ¢ -¾ CO tn * u. 0 CO cr &gt; CO to G fc— * r * jw ¢ -¾ CO CO oo s cr &gt; s cri C5 a &gt; cr &gt; oo CD C5 〇 &gt; CD C5 oo 〇ooo CD oo CD ooo * Oi CT5 CO 〇 〇 &gt; CO o CO 〇t treasure 〇 &gt; o CO oso CO oo CO oo ω o CTI 〇 &gt; 〇 &gt; o 〇M, so 1— * H- * oso CO os 〇s CD s O sc = &gt; s PG CO &lt; 〇CO ►— · o lo 1— »C3 〇〇— 〇 &gt; Lo &lt; r &gt; CaD p CO ►—Λ • o CO — obo CO — o CO C3 L〇— o to cr &gt; CO to c &gt; operation〇 &gt; o CO cn to cn o to cn C5 «Ν3 cn C3 to CJri c &gt; CO an C5 cn p &gt; CO tn c / &gt; 〇〇 &gt; 〇o C5 CD oo CD oo C3 o &lt; = &gt; C3 o 〇 »ooo 〇a &gt; c = &gt; o ac UD crt ^ r &gt; cn K £ &gt; cr »IX &gt; cn to cn cr &gt; cn tx &gt; a *» CO tn &lt; x &gt; cn cc &gt; cn ο〇, to cn to crt uc &gt; clti g CO cn OJ cn CO cn oa ot co &gt; cn CO cn ca cn Ca &gt; cn ΟΛ Cn p &gt; CT3 p &gt; o Win 〇 &gt; cr &gt; CD CD 〇cn P CD o cr &gt; a &gt; o Win og cn pg cn o § cr &gt; o § CT3 C5 os CD CD g crv g cn p &gt; o — G »&lt; 〇 • o &lt; 3 oo ooc? o pt g cn poso • g cn O g CTJ g CD 〇 g cn 〇 &gt; o 〇CD 〇 &gt; o 〇C5 CD oooo CD ooo CD 〇 &gt; o 〇 &lt; r &gt; o oo CO o ts2 o to 2 ts3 CD tO 2 to o CO ro CD tND CD to 2 rc 2 O O 〇ts5 2 cr &gt; o OOJ cn oo »— * c = &gt; 2 〇 · 〇cr &gt; 2 o c &gt; o &lt; = &gt; CO p CO CO CD CO to &lt; r &gt; CO * p * CO CO 〇 &gt; GO CO p CO CO a &gt; COt c = &gt; CO ca Ol CO CO 〇 &gt; CO OJ f &gt; C〇f CO p &gt; Cx &gt; CO CD CO p ω to C5 ω p ca 1— * &lt; r &gt; CO CO p CO to p CX) l \ D C3 C〇tO c &gt; CO to o CO to c &gt; CO CO &lt; rr &gt; C5 &lt; r &gt; c = &gt; c = &gt; 〇 &gt; o 〇 &gt; C3 o o CP CD CD o C5 oo 2 o &lt; 〇oo C? C3 oo C-3 cr * O c =? 2 〇 »o 2 2 s 2 Cp o — o 2 o OK £> CD — tp CD o 〇 CD oo CD 〇 &gt; 〇 &gt; 〇 &gt; C3 oooo CD CD c = &gt; CD o CD 〇o CZ &gt; S ΐ * &quot; * · ~ s V— * ～ 4 mouthful 1— ^ ～ 4 »— * * 〇 一 CO s GO GO s ΓΟ ogo &lt; r »〇 &lt; 〇to o &lt; oooo 〇 &gt; CD CD cr &gt; CD G &gt; ooo« 〇oo CD oo CD 〇t 0 ^. Oo Known CD ( X ^ CO o tr »s tr &gt; o Ok U ^ N. To cr &gt; (X &gt; Ο CO C5 cx &gt; CD s CO o to 〇 &gt; C2 blue so 2 o CD o &lt; = &gt; cloud o 〇 &gt; CD blue c &gt; &lt; o 〇CD o 〇 &gt; o 〇ooo * o CD cr &gt; CD &lt; r &gt; oo CD 〇ooooo cy〇cr s 〇 * — * gg · — · gooo ►— * ogig E ♦ -* Gg 一 o blue c = &gt; og Η- * ogiso p &gt; b cn C &gt; S cn c = &gt; b CXi CD b cn p &gt; 芑 cn p &gt; k Cn 〇 &gt; a &gt; t &gt; o cn ps cn CD * b C / H cr &gt; 〇 &gt; eo cn cr &gt; b cn C5 art 〇 »to cn CD 〇CO cn 〇to tS3 cn p CD o &lt; r &gt; b cn CD 〇 &gt; Cs3 cn &lt; = 3 &lt; 〇ΓΟ cri o ♦ o ro cn &lt; = &gt; cn o to cn &lt; = &gt; s crt ob cn | 0.0040 p &gt; will · 〇o &lt; z &gt; c = &gt; 2 CD og blue p CD s 〇 &gt; c &gt; CD 〇 &gt; c = &gt; ooo a &gt; g blue C = 3 es Ot 〇 &gt; goc = &gt; g 〇 »Contains 〇 (CD c = &gt; g ZJ \ CD c? so 〇 &gt; gok * C3k. cn C &gt; k cn cr &gt; g cn C &gt; g cn o 8 tJb ^ ay C &gt; § &lt; r? g cn 22: 1 ii 1 i 1 1 1 ii 1 1 1 1 1 1 ! i • 1 1 1 p 2 o 1% ϊ 1 1 I \ 1 1 1 ϊ \ 1 1 1 1 1 1 \ 1 ii 1 1 1 -si 1 * i 50 2 CD 1 1 1 1 \ 1 1 1 &lt; = &cn; cn 1 1 1 1 1 (1 CD o S 〇io 1 • HI 1 Ϊ 1 i | Pd: 0.09 oh *-* · CO &lt; = &gt; oobokr * 5 a »p &gt; b 〇 $ C = 5 S 1 1 1 o? Run aM CD k | oioo * o-3t! | 〇 &gt; k 1 1 Ca: 0.00051 Xue CO 0 * 1 CO CO CM CO CO CO ca pi C-Λ tsD Cn CJI CO cn CO cn CO CO 〇 &gt; CO 〇〇 · pn cn CO cn &lt; U &gt; Cri L, oo Cn to o »c ^ oo oo p oo oa OD OO oo TO OO &gt; t CO Cn CO &lt; = 3 〇 〇CO oo 〇 &cn; cn CO m (Dove io / 0) 5 44 200303929 发明, description of the invention using the aforementioned tensile test , Extension). -Mechanical properties (tensile strength) Then, the foregoing test pieces were used to evaluate the resistance to hydrochloric acid and sulfuric acid 5 10. The resistance to hydrochloric acid was immersed in 3M (mol / L) Hydrochloric acid in water for evaluation. Q6 hours' while the corrosion reduction IW is responsible for 40% ^^ acid aqueous solution 6 generations 6 small

時，依腐蝕減量，進粁蟬庐 0 σ °另’本發明並非以在實施例 中所用之各條件予以限定者。 &quot;於表5、表6(續表5之。、表7(續表5之2)、表 8、’、·《表5之3)顯示上述試驗之材質評價結果。 15 20In this case, the amount of corrosion is reduced to 0 σ °. In addition, the present invention is not limited by the conditions used in the examples. &quot; Tables 5 and 6 (continued in Table 5), Table 7 (continued in Table 5-2), Tables 8, ', and "Table 5-3" show the material evaluation results of the above tests. 15 20

45 200303929 砍、發明說明表5材質評價試驗結果 赖黏缴制：轵娜沼(M-翔醞李 细躧雜漭郛漭！¢2¾ (ίΞΒ·鎅浚3¾唞橋；tIF適)X .鸪*{&gt;'' I兹姻·'〇*酿◎ ^0 雜砩 1 &quot; (vs/2tMn/6+Ni/40+cr/5 + MO/4+v714 〇〇 &gt;- £ £ &gt;- &gt;- to45 200303929 Cutting, invention description Table 5 Material evaluation test results are based on sticky system: 轵 Nanuma (M-Xiang Li fine mixed 躧! ¢ 2¾ (ί 漭 郛 漭 Β · 鎅 仲 3¾ 唞 桥; tIF appropriate) X. 鸪* (&gt; '' I 兹 marriage'〇〇 酿 ◎ ^ 0 Miscellaneous 1 &quot; (vs / 2tMn / 6 + Ni / 40 + cr / 5 + MO / 4 + v714 〇〇 &gt;-£ £ &gt;-&gt;-to

SI CO U3 t&gt;SI CO U3 t &gt;

O c^&gt; cn 39 0 審玫函4T34772 &lt;X) o l&gt; to 〇〇 cnO c ^ &gt; cn 39 0 Examination letter 4T34772 &lt; X) o l &gt; to 〇〇 cn

CO ο CO cn --4 to cnCO ο CO cn --4 to cn

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i I 36 34 33 32 33 ί ^IrdH au鄯 眾涵书10-110327 雜&gt;&gt;菡46-34772 雄玫舔46-34772 Μ0_辣贫 cue知 S鉍t;;'澇趦饵 Ρ迤一: ^—ϋ S.TEN1 避 SS400 遒 齑ϋ 5 46 200303929 玫、發明說明表6材質評價試驗結果（續表5之1) „ ,丨; s^ii'il5III^NIi(st^2silp8^«N-i!flN--rx:_'A.^_*i:t§^&gt;c ms 雜蜮I = os/24£n/6+Ni/40+cr/5+MO/tv/u ◎ ◎i I 36 34 33 32 33 IIrdH au 鄯 Public Book 10-110327 Miscellaneous &gt; &gt; 菡 46-34772 Xiong Mei licked 46-34772 Μ0_ spicy poor cue knows bismuth t ;; ' ^ —Ϋ S.TEN1 Avoid SS400 遒 齑 ϋ 5 46 200303929 Rose, invention description Table 6 Material evaluation test results (continued Table 5-1) „, 丨; s ^ ii'il5III ^ NIi (st ^ 2silp8 ^« Ni! flN--rx: _ 'A. ^ _ * i: t§ ^ &gt; c ms Miscellaneous I = os / 24 £ n / 6 + Ni / 40 + cr / 5 + MO / tv / u ◎ ◎

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〇〇. CO c*&gt; cn 〇 〇 〇 i ^il^w&gt;40gpa i¥^^&gt; 400ypa Isjiglvllillgl 砘 &gt;40gpa 雖f酱谏河〉40Q¥r ,¥苍歃鄉 V40QMPI 朔莕&gt;35%~ ¥#^Nl&gt; 400Mpa 茚 ΙΦ 澉砘 &gt;4Q〇liF7 雜ΙΦ &gt;35%I la&gt;ls%— 微；&gt;35求 _ &gt; 35穿 1 1#锻蔣 &gt;4Qgpa 5 47 200303929 玖、發明說明表7材質試驗評價結果（續表5之2)〇〇. CO c * &gt; cn 〇〇〇i ^ il ^ w &gt; 40gpa i ¥ ^^ &gt; 400ypa Isjiglvllillgl 砘 &gt; 40gpa Although f sauce 谏 河> 40Q ¥ r, ¥ Cangyu Township V40QMPI Shuo 荇> 35% ~ ¥ # ^ Nl &gt; 400Mpa Ind IΦΦ &gt; 4Q〇liF7 MisIΦ &gt; 35% I la &gt;ls%-micro; &gt; 35 seeking_ &gt; 35 wear 1 1 # forging Chiang &gt; 4Qgpa 5 47 200303929 发明 Description of invention Table 7 Material test evaluation results (Continued Table 5-2)

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iU 32 31 Ο 〇 Ο 〇 〇 〇 Ο ο Ο 〇 ^δπΗ .¾鄺 館吝&gt; 35# 铒苕避钶&gt; 40gpa 趑呑潘砘&gt; 4QQMPa ,^¾¾ 蔣 &gt; 4ioOMPa kfl-gl^l^&gt;40Qlagpa 筠凉雔葙&gt; 400MPa 铒審遛砘&gt; 400MPaiU 32 31 〇 〇〇 〇〇〇〇〇 〇 〇 ^ δπΗ .¾ 邝 馆 吝 &gt; 35 # 铒 苕 void 钶 &gt; 40gpa 趑 呑 PAN 砘 &gt; 4QQMPa, ^ ¾¾ Chiang &gt; 4ioOMPa kfl-gl ^ l ^ &gt; 40Qlagpa 筠 凉 雔 葙 &gt; 400MPa 铒 查 遛 砘 &gt; 400MPa

Cr 辣盆進'1^.1苯&gt; 35% 傲 fl-g&gt;35yo .谣，一·φ&gt; 35求 谳苕〉35求 l@l^&gt;3syo 傲考&gt; 351^ 辩荽郵腌&gt; 4QQMPa 阵宴撖lw&gt; 4logpa &gt; 35求 1¾¾ 锞轲 &gt; 4Q0MPa 48 200303929 玫、發明說明表8材質評價試驗結果（續表5之3 ) 斜 &amp;!1 000^ 1ί_ 澈一 SI:, C48 £7 CM6 25 C44 C43· CM2 041 C40 C39Cr hot pot into '1 ^ .1benzene &gt; 35% proud fl-g &gt; 35yo. Rumor, a. Φ &gt; 35 seeking 谳 苕> 35 seeking l @ l ^ &gt; 3syo 考考 &gt; 351 ^ Pickled &gt; 4QQMPa Feast 撖 lw &gt; 4logpa &gt; 35 Find 1¾¾¾ 锞 轲 &gt; 4Q0MPa 48 200303929 Rose, Invention Description Table 8 Material Evaluation Test Results (Continued Table 5-3) Oblique &amp;! 1 000 ^ 1ί_ Che Yi SI :, C48 £ 7 CM6 25 C44 C43 · CM2 041 C40 C39

C3S 037 C36 035 cw»u 23 S2 C31 C30C3S 037 C36 035 cw »u 23 S2 C31 C30

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i I 34 Μ cas 33 35 33 33 35 32 W3 33 CO2 300 41 雜苕 广％丨) d— ο 〇 〇 o iRn s d~ ¢:1-1¾¾¾.^¾邀laf&gt; 400Mpa crBla·道，1lEil-&amp;l^w&gt; 400Mpa B# 郢姆&gt; 400MPa 阵每颍莼&gt; 400lacpa 岛逾漭1%V 40gpa 爵審澉1»&gt; 400isgpa 1^1¾ 郢蔣 &gt; 400lgclpa 阵審郢蔣&gt; 400MPa 逬審歃Ry4Q0Mpa 茚 il-a·遴1¾&gt; 400MPa 既苍郢1»&gt; 400|8:?3 1¾¾¾¾ &gt; SOMPa 筠專邂1»&gt; 40PMP3 陆審雔辣&gt; 4Q0MPa 阵苕遨/¾ &gt; 40QMPa “&gt; 35求 辟唾&gt;35求 磔嘻&gt; 35% 雜 fl-ts·'〉35 示 勝苍&gt; 35求 l^ljl-shl&gt;35yo 鹿 1.Φ &gt; 359Γ 識m 49 200303929 玖、發明說明 C1〜C48為本發明例之鋼（以下，稱為本發明鋼 另方面A1 A21及B1〜B14為比較例之鋼（以下稱為 比較鋼）’ A1為普通鋼，A2〜A8為習知之耐硫酸露點腐 餘鋼。A15及A16為特公昭⑹仰號公報所示之鋼成 5伤之耐硫酸露點腐蝕鋼。比較鋼A17〜A18為特開平1〇_ 110237號公報所示之鋼成份之耐硫酸露點腐㈣。比較 鋼—a21為特公昭46_34772號公報所述之鋼成份（該公報 之實施例第1表中之鋼種6號)。前述鋼種&quot;虎在前述公 報之實施财AI值為最大。雖然比較例m〜Β14為本發 10明人等人在達成本發明鋼之過程中所得之耐鹽酸腐純優 :之低合鋼，但耐酸腐㈣指數ΑΙ值或擴張耐酸腐餘性 指數EI值為本發明範圍外之鋼。 15 20 ^W蚀性之评價係表示與比較鋼，即（ ―处系之耐硫酸露點腐⑽（S-TEN1鋼）之耐純之; 對評價者，◎係表示相對於比較鋼A2特佳，〇係表示1 ，△係表示相等，▽係表示稍低，χ係表示差。另，比_ 鋼Α2在Α2〜Α8之習知之耐硫酸露點腐蝕鋼中為Cu_s 無添加Μ。’如表5所示，特別是耐鹽酸性與· f白佳目&amp;，本發明鋼之耐蚀性之評價係以比較逾 A2為基準所進行者。 與本發明鋼 首先，就比較鋼A1〜A21及B1〜Bi4 C1〜C48之耐鹽酸性與耐硫酸性加以說明。 比較鋼A1 添加量在本發明i I 34 μ cas 33 35 33 33 35 32 W3 33 CO2 300 41 Miscellaneous% 丨) d— ο〇〇o iRn sd ~ ¢: 1-1¾¾¾. ^^ Invitation laf &gt; 400Mpa crBla · dao, 11Eil- &amp; l ^ w &gt; 400Mpa B # 郢 姆 &gt; 400MPa arrays per unit &gt; 400lacpa islands more than 1% V 40gpa trials 1 »&gt; 400isgpa 1 ^ 1¾ 郢 Chiang &gt; 400lgclpa 郢 reviews &gt; 400MPa 逬Review Ry4Q0Mpa Indil-a · Lin 1¾ &gt; 400MPa Existing Cang1 »&gt; 400 | 8:? 3 1¾¾¾¾ &gt; SOMPa 筠 Specialist 1» &gt; 40PMP3 Land Review Hot &gt; 4Q0MPa Array / ¾ &gt; 40QMPa "&gt; 35 seeks a saliva &gt; 35 seeks a hesitant &gt; 35% miscellaneous fl-ts · '> 35 shows the winner &gt; 35 seeks l ^ ljl-shl &gt; 35yo deer 1.Φ &gt; 359Γ 49 200303929 发明 Description of the invention C1 ~ C48 are steels of the examples of the present invention (hereinafter, referred to as the steels of the invention A1 A21 and B1 ~ B14 are steels of the comparative examples (hereinafter referred to as comparative steels) 'A1 is ordinary steel, A2 ~ A8 is the conventional sulfuric acid dew point corrosion resistant steel. A15 and A16 are sulfuric acid dew point corrosion resistant steels with 5 wounds as shown in Japanese Patent Publication No. Shoken. No. Hei 10 ~ 110237 Sulfur resistance of the steel composition shown Acid dew point rot. Comparative steel—a21 is the steel composition described in Japanese Patent Publication No. 46_34772 (Steel Grade No. 6 in Table 1 of the Example of the Bulletin). The aforementioned steel grade &quot; Tiger ’s AI value in the aforementioned Bulletin The largest. Although the comparative examples m ~ B14 of the present invention were obtained by Mingming et al. In the process of reaching the invention of steel, the resistance to hydrochloric acid corrosion was excellent: low-combined steel, but the acid corrosion resistance index ΑΙ value or extended acid corrosion resistance The index EI value is steel outside the scope of the present invention. 15 20 ^ W Corrosiveness evaluation refers to and compares the steel, that is, the pure resistance of (-sulfuric acid dew point corrosion resistance (S-TEN1 steel); The ◎ indicates that it is better than the comparative steel A2, 〇 indicates 1, △ indicates equal, ▽ indicates slightly lower, and χ indicates poor. In addition, the sulfuric acid-resistant dew point of steel A2 in A2 ~ A8 is known. In the corrosion steel, Cu_s is not added. As shown in Table 5, in particular, the hydrochloric acid resistance and the f white good &amp;, the evaluation of the corrosion resistance of the steel of the present invention is based on a comparison exceeding A2. Compared with the steel of the present invention, first, compare the hydrochloric acid resistance and sulfuric acid resistance of steels A1 to A21 and B1 to Bi4 C1 to C48. Bright. Compare the amount of steel A1 added in the present invention

如上述為普通鋼，Cu、Ni、Mo、Sb等之 之範圍外，且耐鹽酸性及耐硫酸性遠較本 50 200303929 玖、發明說明 發明鋼差。 比較鋼A2如上述為Cu — Sb系之对硫酸露點腐名虫鋼 ，由於未添加Mo，故而ί鹽酸性在比較鋼A2〜A8中為最佳 ，然而耐鹽酸性遠較本發明鋼C1〜C48差。 5 比較鋼A3〜Α6皆為Cu—Cr系之耐硫酸露點腐蝕鋼As mentioned above, it is ordinary steel, outside the range of Cu, Ni, Mo, Sb, etc., and the resistance to hydrochloric acid and sulfuric acid is much lower than this 50 200303929 发明, description of the invention The invention steel is inferior. Comparative steel A2 is a Cu—Sb-based pair of sulfuric acid dew point scum-steel steel. Because Mo is not added, the hydrochloric acid resistance is the best among the comparative steels A2 to A8, but the hydrochloric acid resistance is much better than the steel C1 of the invention C48 is poor. 5 Comparative steels A3 to A6 are Cu-Cr-based sulfuric acid dew point corrosion resistant steels

比較鋼A3由於Cr超過本發明之上限，且未添加Mo 及Sb之點而超出本發明之範圍，故耐鹽酸性及耐硫酸性 較本發明鋼差。 10 比較鋼A4由於Cr超過本發明之上限，且未添加Mo 之點超出本發明之範圍，故耐鹽酸性及耐硫酸性較本發明 鋼差。 比較鋼A5由於Cr超過本發明之上限，且ΑΙ&lt;0之 點在本發明之範圍外，故耐鹽酸性及耐硫酸性較本發明鋼 15 差。Comparative steel A3 is inferior to the steel of the present invention in that Cr exceeds the upper limit of the present invention, and that Mo and Sb are not added, thereby exceeding the scope of the present invention. 10 Comparative steel A4, because Cr exceeds the upper limit of the present invention, and the point where Mo is not added exceeds the range of the present invention, the hydrochloric acid resistance and sulfuric acid resistance are inferior to those of the steel of the present invention. Comparative steel A5 has a lower Cr and sulfuric acid resistance than the steel 15 of the present invention because Cr exceeds the upper limit of the present invention and A1 &lt; 0 is outside the scope of the present invention.

比較鋼A6由於Cr超過本發明之上限，且未添加Sb ，ΑΙ&lt;0之點在本發明之範圍外，故耐鹽酸性及耐硫酸性 較本發明鋼差。 比較鋼A7由於未添加Mo之點在本發明之範圍外， 20 故耐鹽酸性及耐硫酸性較本發明鋼差。 比較鋼A8由於未添加Mo，且Cr、Ni及Sb之含有 量在本發明之範圍外，故耐鹽酸性及耐硫酸性較本發明鋼 差。 比較鋼A9由於P超過本發明範圍之上限，故耐鹽酸 51 200303929 玖、發明說明 性及耐硫酸性較本發明鋼差。 比較鋼All雖然耐鹽酸性及耐硫酸性與本發明鋼幾 乎相等，但由於S超過本發明範圍之上限，故於熱加工時 於鋼板表面產生許多細微之裂紋。 5 比較鋼A12由於添加量較本發明範圍之下限低， 且AI&lt; 〇，故耐鹽酸性及耐硫酸性較本發明鋼差。 比較鋼A13由於Mo添加量超過本發明範圍之上限 ，且AI&lt;〇，故耐硫酸性較本發明鋼差。 0 比較鋼A14為比較鋼A2之極低c系（〇〇〇3% )之 耐硫酸露點腐蚀鋼。由於未添加Mo，故耐鹽酸性及耐硫 酉文f生與比較鋼A2相等，但耐鹽酸性及耐硫酸性較本發明 鋼差。 比較鋼A15由於未添加Sb ,且AI值&lt;〇。因而耐鹽 酸性與比較鋼A2幾乎相等，但耐硫酸性較本發明鋼差。 15 換言之，耐鹽酸性及耐硫酸性皆較本發明鋼差。 比較鋼A16雖滿足AI值^〇,但未添加為本發明之 · 必要元素之Sb，因此耐鹽酸性及耐硫酸性與比較鋼八之相 等。換言之，耐鹽酸性及耐硫酸性皆較本發明鋼差。 比較鋼ΑΠ及A18AI值&lt;〇’而在本發明之範圍外， 20因此耐鹽酸性較比較鋼A2佳’但耐硫酸性較比較鋼A2 差。換言之，耐鹽酸性與本發明鋼相等，但耐硫酸性較本 發明鋼差。 比較鋼A21未添加Sb , Ni添加量亦在本發明之範圍 外，且AI值&lt;0。因而，耐鹽酸性與比較鋼A2相等，&amp; 4曰 52 200303929 玖、發明說明 耐硫酸性較比較鋼A2差。換言之，耐鹽酸性及耐硫酸性 皆較本發明鋼差。 其次，就比較鋼B1〜B14之耐鹽酸性及耐硫酸性加以 說明。 5 比較鋼B1〜B14為在達成本發明之過程中由發明人等 人發現之耐鹽酸性優異之鋼，雖然本發明之鋼組成對任何 限疋元素皆滿足，但AI &lt; 0或EI &lt; 〇，且AI值或EI值在 本發明之範圍外。因此，耐鹽酸性與本發明鋼C1〜C48同 樣地優異，但耐硫酸性卻差。 丄〇 其-人，就本發明鋼Cl〜C48之耐硫酸性及耐鹽酸性加 以說明。 本發明鋼C1〜C48係顯示滿足本發明之鋼成份，進而 成份設計為滿足AI值-0或EI值-〇之具有極優異之耐 鹽酸性及耐硫酸性之鋼。 15 C1〜CIO、C13〜C26、C28〜C45為以Cr作為雜質且限 定在〇.1%以下之鋼。C11、C12、C27、C47、C48為添加 Cr在本發明之範圍内作為選擇元素之本發明鋼。 以Cr為雜質且將之限定在〇1%之本發明鋼之耐鹽 酸性相較於在耐硫酸露點腐蝕鋼之比較鋼A2〜A8中耐蝕 2〇丨生最優異之A2為5倍以上（表中評價◎)，且耐硫酸性 為比較鋼A2〜A8中耐蝕性最優異之A2之2倍以上（表 中評價〇）。 添加Cr在本發明之範圍内之本發明鋼耐鹽酸性及耐 硫酸性較未添加Cr之本發明鋼稍差，但卻較比較鋼A2 200303929 玖、發明說明 優異。 本發明鋼C13係S為0.003%之例。C14係S為 0.015% ，而其他組成及AI則與C13相同。C13耐硫酸性 及耐鹽酸性較比較鋼A2優異，耐鹽酸性及耐硫酸性較 5 C14差。因此，得知添加S超過0.005%時，可同時獲得 更優異之耐硫酸性及对鹽酸性。 如以上可明瞭本發明耐硫酸性及耐鹽酸性均優異。 其次’就本發明鋼之機械性質加以說明。 如表5〜表8所示，本發明鋼之ci、C3、C4、C7、 10 C13〜C23、C32〜C48顯示在拉伸強度上超過4〇〇Mpa，而 可獲得拉伸強度400MPa等級之熔接構造用鋼（相當於 JIS G3101 )。進一步’如表5〜表8所示，由於本發明鋼 之碳當量即使最大亦僅為〇.32%，且從在代之溶接裂紋 試驗結果在上述本發明鋼中皆未視為裂紋，可明瞭具有充 15 分之熔接性。 因此可知該等上述本發明鋼為耐鹽酸性、耐硫酸 優異之熔接構造用鋼。 20Comparative steel A6 has Cr exceeding the upper limit of the present invention, and Sb is not added. The point of A1 &lt; 0 is outside the scope of the present invention, so the resistance to hydrochloric acid and sulfuric acid is inferior to that of the steel of the present invention. The comparative steel A7 is out of the scope of the present invention because it is not added with Mo, so the hydrochloric acid and sulfuric acid resistance are inferior to those of the present invention. Comparative steel A8 has no addition of Mo and the contents of Cr, Ni, and Sb are outside the range of the present invention. Therefore, the resistance to hydrochloric acid and sulfuric acid is inferior to that of the present invention. Comparative steel A9 has a hydrochloric acid resistance of 51 200303929 because P exceeds the upper limit of the range of the present invention, and the illustrative properties and sulfuric acid resistance are inferior to those of the present invention. Although the comparative steel All has almost the same hydrochloric acid resistance and sulfuric acid resistance as the steel of the present invention, since S exceeds the upper limit of the range of the present invention, many fine cracks are generated on the surface of the steel sheet during hot working. 5 Comparative steel A12 has a lower addition amount than the lower limit of the present invention and AI &lt; 〇, so the hydrochloric acid resistance and sulfuric acid resistance are inferior to the steel of the present invention. Comparative steel A13 has a poorer sulfuric acid resistance than the steel of the present invention because the amount of Mo added exceeds the upper limit of the range of the present invention and AI <0. 0 Comparative steel A14 is a very low c-series (0.0003%) sulfuric acid dew point corrosion resistant steel of comparative steel A2. Since Mo is not added, the hydrochloric acid resistance and sulfur resistance are equal to those of the comparative steel A2, but the hydrochloric acid resistance and sulfuric acid resistance are inferior to those of the steel of the present invention. Comparative steel A15 had no Sb added, and the AI value was <0. Therefore, the salt resistance and acidity are almost equal to those of the comparative steel A2, but the sulfuric acid resistance is inferior to that of the steel of the present invention. 15 In other words, both the hydrochloric acid resistance and the sulfuric acid resistance are inferior to those of the steel of the present invention. Although Comparative Steel A16 satisfies the AI value ^ 0, Sb, which is an essential element of the present invention, is not added. Therefore, hydrochloric acid resistance and sulfuric acid resistance are equivalent to Comparative Steel Eight. In other words, both the hydrochloric acid resistance and the sulfuric acid resistance are inferior to those of the steel of the present invention. Comparative steels AΠ and A18AI values &lt; 0 &apos; are outside the scope of the present invention, so 20 is better in hydrochloric acid resistance than comparative steel A2 'but less resistant to sulfuric acid than comparative steel A2. In other words, the hydrochloric acid resistance is equal to that of the steel of the present invention, but the sulfuric acid resistance is inferior to that of the steel of the present invention. Comparative steel A21 was not added with Sb, and the amount of Ni added was outside the range of the present invention, and the AI value was &lt; 0. Therefore, the hydrochloric acid resistance is equal to that of the comparative steel A2, & 4:52 200303929 发明, description of the invention The sulfuric acid resistance is worse than that of the comparative steel A2. In other words, both the hydrochloric acid resistance and the sulfuric acid resistance are inferior to those of the steel of the present invention. Next, the comparison of the hydrochloric acid resistance and sulfuric acid resistance of the steels B1 to B14 will be described. 5 Comparative steels B1 to B14 are steels with excellent hydrochloric acid resistance discovered by the inventors and others during the process of reaching the invention. Although the steel composition of the present invention satisfies any limit elements, AI &lt; 0 or EI & lt 〇, and AI value or EI value is outside the scope of the present invention. Therefore, the hydrochloric acid resistance is similar to that of the steels C1 to C48 of the present invention, but the sulfuric acid resistance is poor.丄 〇 The person will explain the sulfuric acid resistance and hydrochloric acid resistance of the steel Cl ~ C48 of the present invention. The steels C1 to C48 of the present invention show steels satisfying the present invention, and further the components are designed to meet the AI value-0 or EI value-0 and have extremely excellent resistance to hydrochloric acid and sulfuric acid. 15 C1 to CIO, C13 to C26, and C28 to C45 are steels containing Cr as an impurity and limited to 0.1% or less. C11, C12, C27, C47, and C48 are steels of the present invention in which Cr is added as a selection element within the scope of the present invention. The hydrochloric acid resistance of the steel of the present invention which uses Cr as an impurity and is limited to 0.01% is 5 times or more than that of A2 ~ A8, which is the most excellent corrosion resistance of the comparative steels A2 to A8, which are resistant to sulfuric acid dew point corrosion. Evaluation in the table ◎), and the sulfuric acid resistance is twice or more than that of A2, which is the most excellent corrosion resistance among the comparative steels A2 to A8 (evaluation in the table). The steel of the present invention in which Cr is added within the scope of the present invention has slightly lower hydrochloric acid resistance and sulfuric acid resistance than the steel of the present invention in which Cr is not added, but is better than the comparative steel A2 200303929. The invention description is superior. An example of the steel C13 series S of the present invention is 0.003%. C14 series S is 0.015%, while other components and AI are the same as C13. C13 has better sulfuric acid resistance and hydrochloric acid resistance than steel A2, and has lower hydrochloric acid resistance and sulfuric acid resistance than 5 C14. Therefore, it was found that when S is added in an amount exceeding 0.005%, more excellent sulfuric acid resistance and hydrochloric acid resistance can be obtained at the same time. As can be seen from the above, the present invention is excellent in both sulfuric acid resistance and hydrochloric acid resistance. Next, the mechanical properties of the steel of the present invention will be described. As shown in Tables 5 to 8, ci, C3, C4, C7, 10 C13 to C23, C32 to C48 of the steel of the present invention show a tensile strength exceeding 400 MPa, and a grade of 400 MPa tensile strength can be obtained. Steel for welding structure (equivalent to JIS G3101). Further, as shown in Tables 5 to 8, since the carbon equivalent of the steel of the present invention is only 0.32% at the maximum, and from the results of the welding crack test, it is not considered to be a crack in the above-mentioned steel of the present invention. It is clear that it has a full 15% weldability. Therefore, it can be seen that the above-mentioned steels of the present invention are steels for welding structures having excellent resistance to hydrochloric acid and sulfuric acid. 20

又C2 C5〜C12、C24〜C31皆顯示在冷乳鋼板之 張率超過35% ’而可知為加卫性亦十分優異之鋼板。 進一步，將比較鋼A1及伽丄 及A2與本發明鋼C3及C6 潰於熱鍍鋅業者使用中之臨酿 。 Y之里齩®夂冼水槽（15質量％鹽 、30 C、添加緩蝕劑），而 旦 1點娬測計測定之板厚減 里’評價耐鹽酸性。將1 _ 八、、、口果顯不於第8圖。本發明 C3及C36之板厚減少 挪迷度）顯示0.1mm/年 54 200303929 玖、發明說明 比較鋼A1顯示1.2mm/年，比較鋼A4顯示〇.4mm/年。本 叙明鋼之腐#速度相較於比較鋼A1為，相較於比較 鋼A2為1/4。因此，可明瞭本發明鋼在鹽酸酸洗槽用途 上具有優異之耐鹽酸性。 5 進一步，將比較鋼A1及A2與本發明鋼C3、 C13〜C15、C17〜C23及C36浸潰於熱鍍鋅業者使用中之硫 酸酸洗水槽（20質量％硫酸、4〇1、添加緩蝕劑），與在 鹽酸酸洗槽之試驗同樣地以板厚減少速度實施耐硫酸性之 · 評價。結果，本發明鋼之試驗材之腐蝕速度相較於比較鋼 10 A1 ’即使最大亦僅為1/16，相較於比較鋼A2，即使最大 亦僅為1/2。因此’可明瞭本發明鋼在硫酸酸洗槽用途上 具有優異之财硫酸性。 進一步，將比較鋼A1及A2與本發明鋼C3、 C14〜C18及C36於同時產生硫酸露點腐蝕與鹽酸露點腐 15 蝕之廢棄物焚化施設之袋濾器送入側及煙®中段之檢修孔 貼附試片，而實施1年曝露試驗。袋濾器送入側為含較多 · 量飛灰或氯化氫之排氣環境，而煙自中段之檢修孔則為排 煙處理後之灰或氣化氫少之排氣環境。以腐蝕減量評價耐 · 硫酸露點及耐鹽酸露點腐蝕性之結果顯示於第9圖。本發 * 20明鋼之腐姓減量相較於比較鋼Α1為1/1〇以下，相較於比 較鋼Α2為1/4。因此，可明瞭本發明鋼在硫酸露點腐蝕 及鹽酸露點腐I虫同時產生之廢棄物焚化施設之排煙環境中 具有優異之财姓性。 實施例2 55 200303929 玖、發明說明 於表9顯示試驗芯線成份，表10〜表11 (續表10) 係顯示以本發明試作並試驗之被覆弧焊棒（棒徑·· 4.0mm )之化學組成。In addition, C2, C5 to C12, and C24 to C31 all show that the cold milk steel sheet has an expansion ratio of more than 35% ', and it can be seen that the steel sheet is also excellent in reinforcement. Further, the steels A1, Gaya and A2, and the steels C3 and C6 of the present invention will be compared with those used in the hot-dip galvanizing industry. Yinosaka® Rhenium® water tank (15% by mass of salt, 30 C, corrosion inhibitor added), and the thickness of the plate measured by a 1-point radon gauge was evaluated to evaluate hydrochloric acid resistance. Show 1 _ 8,,, and fruit in Fig. 8. The thickness reduction of the C3 and C36 of the present invention is 0.1mm / year 54 200303929 29, description of the invention Comparative steel A1 shows 1.2mm / year, and comparative steel A4 shows 0.4mm / year. The speed of the rot # of this steel is 1/4 compared to the comparison steel A1 and 1/4 compared to the comparison steel A2. Therefore, it is clear that the steel of the present invention has excellent hydrochloric acid resistance for use in a hydrochloric acid pickling tank. 5 Further, the comparative steels A1 and A2 and the steels C3, C13 to C15, C17 to C23, and C36 of the present invention are immersed in a sulfuric acid pickling water tank (20% by mass sulfuric acid, 401, Etchant). The sulfuric acid resistance was evaluated and evaluated at the same rate as the test in the hydrochloric acid pickling tank. As a result, the corrosion rate of the test material of the steel of the present invention is only 1/16 compared to the comparative steel 10 A1 ′ even at the maximum, and compared to the comparative steel A2 even the maximum is only 1/2. Therefore, it is clear that the steel of the present invention has excellent sulfuric acid properties for sulfuric acid pickling tank applications. Further, the bag filter inlet side of the waste incineration installation of the waste incineration device that compares the steels A1 and A2 with the steels C3, C14 ~ C18, and C36 of the present invention to produce sulfuric acid dew point corrosion and hydrochloric acid dew point corrosion 15 corrosion at the same time, and the inspection hole stickers in the middle section A test piece is attached, and a 1-year exposure test is performed. The inlet side of the bag filter is an exhaust environment containing a large amount of fly ash or hydrogen chloride, while the manhole in the middle of the smoke is an exhaust environment with less ash or gaseous hydrogen after the exhaust treatment. Fig. 9 shows the results of the corrosion resistance evaluation of the sulfuric acid dew point and hydrochloric acid dew point. In this issue, the reduction of the rotten surname of Mingming Steel is 20% or less compared to Comparative Steel A1 and 1/4 compared to Comparative Steel A2. Therefore, it can be understood that the steel of the present invention has excellent wealth properties in the smoke exhaust environment of waste incineration facilities generated by simultaneous dew point corrosion of sulfuric acid and dew point of hydrochloric acid. Example 2 55 200303929 发明 The description of the invention shows the composition of the test core wire in Table 9, and Tables 10 to 11 (continued Table 10) show the chemistry of the covered arc welding rod (rod diameter ·· 4.0mm) tested and tested according to the present invention. composition.

10 1510 15

56 20 200303929 玖、發明說明 表9試驗芯線成份 W o 〇 &gt; i JriS CD CD CD o Cn d&gt; CZD CD Cn 〇 o § cz&gt; c~^ cz&gt; CO CZ5 CD cz&gt; &lt;〇 C2&gt; cr&gt; £&gt;0 CD b o CZ5 1~~* CO 1—· ♦ o oo to CD CO o o CN〇 cn o CO -&lt;3 O Cn to cz&gt; ►fa- CO p&gt; cz&gt; ►—* cn o C3D I~~» CO cz&gt; s cz&gt; cz&gt; s cn CD cz&gt; H-4 CO cz&gt; CD o -cJ o CD CO cn CI&gt; o o o CD 1~~* CD 〇 o o C3 1k ii ；C3&gt; i oo CD cz&gt; C3&gt; &lt;3&gt; CO cz&gt; CD tND CD C3 CO cz&gt; o 14 CD 1~~* c； CD d&gt; CD cn CD g ：oo &lt;Z&gt; cr&gt; CD CO cr&gt; i o C3 C3 **&lt;l CD CD Cn o CT3 tND s CD to /V o tND 八 CD i 八 CD § t^o V^V cz&gt; cr&gt; ；ci&gt; to oo cr1 CD g tND CD 〇 cz&gt; ►—* CD CD CD cr&gt; CD CD CO CD g CD i I gx CD C3 CO CD 〇 CND o CD CD CO O C3 cr&gt; »~~» o CZ5 s O g 156 20 200303929 发明, Description of invention Table 9 Test core wire components W o 〇 &gt; i JriS CD CD CD o Cn d &gt; CZD CD Cn 〇o § cz &gt; c ~ ^ cz &gt; CO CZ5 CD cz &gt; &lt; 〇C2 &gt; cr &gt; £ &gt; 0 CD bo CZ5 1 ~~ * CO 1— · ♦ o oo to CD CO oo CN〇cn o CO-&lt; 3 O Cn to cz &gt; ►fa- CO p &gt; cz &gt; ►-* cn o C3D I ~~ »CO cz &gt; s cz &gt; cz &gt; s cn CD cz &gt; H-4 CO cz &gt; CD o -cJ o CD CO cn CI &gt; ooo CD 1 ~~ * CD 〇oo C3 1k ii; C3 &gt; i oo CD cz &gt; C3 &gt; &lt; 3 &gt; CO cz &gt; CD tND CD C3 CO cz &gt; o 14 CD 1 ~~ * c; CD d &gt; CD cn CD g: oo &lt; Z &gt; cr &gt; CD CO cr &gt; io C3 C3 ** &lt; l CD CD Cn o CT3 tND s CD to / V o tND eight CD i eight CD § t ^ o V ^ V cz &gt; cr &gt;; ci &gt; to oo cr1 CD g tND CD 〇cz &gt; ►— * CD CD CD cr &gt; CD CD CO CD g CD i I gx CD C3 CO CD 〇CND o CD CD CO O C3 cr &gt; »~~» o CZ5 s O g 1

57 200303929 玫、發明說明 表ίο試驗熔接棒之構造 :&amp;〇泗&gt;10礪 1 W18 ： W17 1 LiisJ | W14 1 1 113 I 1 W12 ] LwiiJ 丨㈣1 3 S 5 =m m CO Λ! tO H-* m 1 I &gt; &gt; &gt; &gt; &gt; CD &gt; &gt; &gt; w 00 to m r&gt; OT to i i cr» cn Μ Ln cn 么 to *^4 cn — cn s or) at ux 00 cn cn 00 w cn CO 仏 cn 仏 cn A CO cn cn CO to σ&gt; η 1 CaC03 | 1 樹酵質量％) 1 to ΟΊ 么 CO tn 如 to cn CO cn »£w to ta to to ux CO tc w μ to ω S ir&gt; tO o ·—» 一 co •*sj to 0 01 to to C/i to CO cn ts5 cr&gt; OOF QO 00 to •u to | CaF, 1 Ο u&gt; ο U3 •Ο CO O to ·〇 CO 一 CO 私 u&gt; — to to ① o H-* σ&gt; 二 H-* UD to o 二 cn cn | Fe-Si | ο Ο ο -&lt;ι o o Ο cn o tn N) to ai CO to CO to (J〇 tx CO o o cn αχ to ? Μ K) to ·—· Μ 一 N5 一 N5 — — 一 — M 05 o 00 o to o 00 o t£) o 一 itW 一 tc — o to o o ο ο κτ ο -α 〇 o •NJ ο o SJ 〇 cn o cn o w o 〇 .μ-» 〇 cn ο cn o o o :¾ ο 仏 ο 43W ο o o ο o Ca5 一 w | 0. 03 | o | 0. 007 1 〇 o CO o c〇 ο o o o 〇〇 cr ο CC ο ο to ο o o to ο 「0.8 1 o 〇 o o 〇 o o ο o o o o M TJ o t K ο ο ο o o ο o ro CD to to o o o o o ο h-A 00 o o o cn αο cn 00 cn 00 〇l 00 01 00 CO 一 K&gt; ax •Vj cn cn w cn tr&gt; cn u&gt; *r^ cn 1 Hi ►-λ Ν5 ί—* Μ to H-* bo M 私 o h-u -Nj tc «u CO CO αχ u&gt; &lt;r&gt; cn cn 1 BaCOs | Ο Ο ο o o ο 〇 〇 o 〇 〇 tNi 〇 — o o Ο o o 〇 Ln― Cn Cn cn Cn cn Cn Oi cn cn tx、 o to CO in ΟΊ cn CT OO w w 一 i£k. μ*1 cn o w O w t 58 200303929 玫、發明說明 表11試驗熔接棒之構造（續表10) *SLd^AM&gt;# m 睇 钭 黎 cn Οί 調 cn to cn 朗 tn o UD 00 =m 3β A cn a\ m JU. f OJ» m s o Co CJD m CO oo CO 2 CT3 w 4^· 〇J&gt; 相 CO to s aft CO o _ CO UD oo tc m to cn s cn a« tsD cx» 讀 CO ISD 蜗 to I I &gt;- &gt; &gt; &gt;- &gt; &gt; &gt; &gt; &gt; C0 GO &gt; oo ca &gt; *D a &gt; DC i II cn &lt;S2- Ο Cn INS 〇 o on to o at l&gt;0 o cn ts3 o cn ΙΌ O cn ro o Oi to o ai ts^&gt; o cn to o ςη CO o cn tci o U1 tN&gt; o tn ΪΝ^ o cn to o iCw to cn CJi 1—* cn CO 办 cn o cn CO cn ro o cn oo 气4 cx&gt; ar\ Cn — cn oo rU »iX 0^. — 办 oo cn n CXI cn cn o ca s I 5 m oc αι OO Cn oo cn 00 cn 00 cn ai 00 cn cn tn cr% « tn cn w tn oa ΟΛ oo Cn oo ai to 公 cr&gt; cn to ro to to CO u&gt; cn tso 〇&gt; to tc cn u&gt; to Oi oo CO cn to CO to ux ISO t?o CO to cn s cr： *--· CO cx&gt; 二 OO 二 oo oo M CO 二 oo 二 OO oo OO oo q CO 二 oo 二 oo (X&gt; 二 CO oo q CO iO cn u&gt; cn 二 oo o to CO ·—» ·—» 一 CXi s to 〇 to — H-* cn 1 C/J o -vl o o o o o o o o •^3 o o o -&lt;» o o —5 o C5 o --4 〇 cn o o cn o 一 4 o o -^a o UP o oo o oo o oo o oo o oo r CO O -vj o 02 式 J3 〇〇 CO o〇 CO CO CO oo 一 CC CO ζΛί — Co 一 CO 1—* CO CO Η-* CO to — u&gt; — to — CO — CO — — o »—» *-* o o tM 〇 — tO H-* o 〇 o oo o oo o oo o 00 o oo o oo o oo o oo o oo o oo o CO o OO o oc o oo 〇 OO o oo o oo o oo o to 〇 oo o oo o CO o oo o CO o 00 o oo o oo o 00 o oo o 〇 •o o CO o CO o CO o CO o o c〇 o 0〇 o U5 o CO o OO o CO o CO o Οΰ o ca o CO o w o o 05 o o CO o CO o ca o C&gt;5 o (Ck o CT&gt; o GO o o cn o CO o CO o &lt;U5 o o &lt;«w o iU. o to o to o o g o NS o to o o o CO o o o to o s o g o s o to o 岩 o o cm o s o CO oo o s o to o 岂 o o o cn o o g o 二 o to o o s 〇 to o o to o *TJ (0 o o o o o o o o o o o o o o o o o r° to o o o Cso CO H-* o o o o o o o o o o o &lt;r&gt; *n JX 私 kU. •Cw A A A »fih. «u. 办 4X •U. 办 办 UX 也 Ntw uv 私 w to CO cn c^&gt; cn — — o cn CO GT&gt; CO cn OD •*H 〇 CO to CO ① CO CO CO iO u： to CO u&gt; CO U5 C£&gt; CO to w ① CO &lt;£» CO CO UD CO &lt;JD CO &lt;·〇 — H-4 N2 o CM CO CO oa c〇 办 cr&gt; •u --4 〇 cr* cn JX C-5 — to Η-» ·—» DO s o o o o o o o o o o o o o o 〇 &lt;z&gt; o 〇 o o o o o o o o o o o o o o f—* o ⑺ 二 kt^ — H-4 •tu — t—4 r-J — H-* H-♦ U3 CD cn Cn o cn c^&gt; fp^ to 办 cn Cn CO u? ^£&gt; CT5 t&lt;5 cn to cn 00 cn Ch cn Cn 00 59 200303929 玖、發明說明 於表12、表13 (續表12之1)、表14 (續表12之2 )、表15 (續表12之3)顯示由表1〇〜表11所示之被覆 弧^干棒形成之炫接金屬之化學組成與耐姓性、溶接部品質 及炼接施工性。又，第12(a)圖、第12(b)圖係顯示用以判 5 定熔接金屬之耐蝕性之腐蝕試片之選取要領者，第13圖 係顯示用以判定熔接接頭部之耐蝕性之腐蝕試片之選取要 領者。如第12(a)圖、第12(b)圖所示，供炼接金屬之耐|虫 性評價試驗之試片係依JIS之熔接金屬之腐蝕試片方法製 成。即’為不受母材成份之影響，從於普通鋼母材3上使 10 用父流k接機，以電流170A對6層之底塾層4施工後之 熔接金屬2以機械加工選取試片1 (4mmx 25mmx 25mm) 。腐蝕試驗係分別進行80°C、10%鹽酸24小時及40°C、 20%硫酸24小時之浸潰腐餘試驗，而求出腐餘減量。 1557 200303929 Rose, invention description table ο Test welding rod structure: &amp; 〇 西 &gt; 10 砺 1 W18: W17 1 LiisJ | W14 1 1 113 I 1 W12] LwiiJ 丨 ㈣1 3 S 5 = mm CO Λ! TO H -* m 1 I &gt; &gt; &gt; &gt; &gt; CD &gt; &gt; &gt; w 00 to m r &gt; OT to ii cr »cn Μ Ln cn Mod to * ^ 4 cn — cn s or) at ux 00 cn cn 00 w cn CO 仏 cn 仏 cn A CO cn cn CO to σ &gt; η 1 CaC03 | 1 mass yield of tree fermentation) 1 to ΟΊ COCO tn such as to cn CO cn »£ w to ta to to ux CO tc w μ to ω S ir &gt; tO o · — »one co • * sj to 0 01 to to C / i to CO cn ts5 cr &gt; OOF QO 00 to • u to | CaF, 1 ο u &gt; ο U3 • Ο CO O to · 〇CO-CO private u &gt; — to to ① o H- * σ &gt; two H- * UD to o two cn cn | Fe-Si | ο Ο ο-&lt; ι oo cn o tn N) to ai CO to CO to (J〇tx CO oo cn αχ to? Μ K) to ··· Μ -N5 -N5----M 05 o 00 o to o 00 ot £) o one itW one tc — o to oo ο ο κτ ο -α 〇o • NJ ο o SJ 〇cn o cn owo 〇.μ- »〇cn ο cn ooo: ¾ ο 仏 ο 43W ο oo o Ca5 -w | 0. 03 | o | 0. 007 1 〇o CO oc〇ο ooo 〇〇cr ο CC ο ο to ο oo to ο 「0.8 1 o 〇oo 〇oo ο oooo M TJ ot K ο ο ο oo ο o ro CD to to ooooo ο hA 00 ooo cn αο cn 00 cn 00 〇l 00 01 00 CO one K &gt; ax • Vj cn cn w cn tr &gt; cn u &gt; * r ^ cn 1 Hi ►-λ Ν5 ί— * Μ to H- * bo M Private o hu -Nj tc «u CO CO αχ u &gt; &lt; r &gt; cn cn 1 BaCOs | Ο ο oo ο 〇〇o 〇〇tNi 〇— oo 〇 oo 〇Ln ― Cn Cn cn Cn cn Cn Oi cn cn tx, o to CO in 〇Ί cn CT OO ww a i £ k. Μ * 1 cn ow O wt 58 200303929 Rose, invention description Table 11 Test welding rod structure (Continued Table 10) ) * SLd ^ AM &gt;# m 睇 钭 黎 cn Οί Tune cn to cn Lang tn o UD 00 = m 3β A cn a \ m JU. F OJ »mso Co CJD m CO oo CO 2 CT3 w 4 ^ · 〇J &gt; Phase CO to s aft CO o _ CO UD oo tc m to cn s cn a «tsD cx» Read CO ISD Snail to II &gt;-&gt; &gt; &gt;-&gt; &gt; &gt; &gt; &gt; C0 GO &gt; oo ca &gt; * D a &gt; DC i II cn &lt; S2- 〇 Cn I NS 〇o on to o at l &gt; 0 o cn ts3 o cn ΙΌ O cn ro o Oi to o ai ts ^ &gt; o cn to o ςη CO o cn tci o U1 tN &gt; o tn ΪΝ ^ o cn to o iCw to cn CJi 1— * cn CO cncn o cn CO cn ro o cn oo gas 4 cx &gt; ar \ Cn — cn oo rU »iX 0 ^. — oo cn n CXI cn cn o ca s I 5 m oc αι OO Cn oo cn 00 cn 00 cn ai 00 cn cn tn cr% «tn cn w tn oa ΟΛ oo Cn oo ai to public cr &gt; cn to ro to to CO u &gt; cn tso 〇 &gt; to tc cn u &gt; to Oi oo CO cn to CO to ux ISO t? o CO to cn s cr: *-· CO cx &gt; two OO two oo oo M CO two oo two OO oo OO oo q CO two oo two oo (X &gt; two CO oo q CO iO cn u &gt; cn two oo o to CO · — »· —» one CXi s to 〇to — H- * cn 1 C / J o -vl oooooooo • ^ 3 ooo-&lt; »oo —5 o C5 o --4 〇cn oo cn o a 4 oo-^ ao UP o oo o oo o oo o oo o oo r CO O -vj o 02 Formula J3 〇〇CO o〇CO CO CO oo 1 CC CO ζΛί — Co 1 CO 1— * CO CO Η- * CO to — u &gt; — to — CO — CO — — o »—» *-* oo tM 〇— tO H- * o 〇o oo o oo o oo o 00 o oo o oo o oo o oo o oo o oo o CO o OO o oc o oo OOOO o oo o oo o oo o to 〇oo o oo o CO o oo o CO o 00 o oo o oo o 00 o oo o 〇 • oo CO o CO o CO o CO ooc〇o 0〇o U5 o CO o OO o CO o CO o 〇ΰ o ca o CO owoo 05 oo CO o CO o ca o C &gt; 5 o (Ck o CT &gt; o GO oo cn o CO o CO o &lt; U5 oo &lt; «wo iU. O to o to oogo NS o to ooo CO ooo to osogoso to o rock oo cm oso CO oo oso to o how ooo cn oogo two o to oos 〇to oo to o * TJ (0 ooooooooooooooooor ° to ooo Cso CO H- * ooooooooooo &lt; r &gt; * n JX Private kU. • Cw AAA »fih.« U. Do 4X • U. Do UX and Ntw uv Private w to CO cn c ^ &gt; cn — — o cn CO GT &gt; CO cn OD • * H 〇CO to CO ① CO CO CO iO u: to CO u &gt; CO U5 C £ &gt; CO to w ① CO &lt; £ »CO CO UD CO &lt; JD CO &lt; · 〇— H-4 N2 o CM CO CO oa c〇 Office cr &gt; • u --4 〇cr * cn JX C-5 — to Η-» · — » DO soooooooooooooo 〇 &lt; z &gt; o 〇oooooooooo oooof— * o ⑺ kt ^ — H-4 • tu — t—4 rJ — H- * H- ♦ U3 CD cn Cn o cn c ^ &gt; fp ^ to cn Cn CO u? ^ £ &gt; CT5 t &lt; 5 cn to cn 00 cn Ch cn Cn 00 59 200303929 发明, invention descriptions are shown in Table 12, Table 13 (Continued Table 1 of 1), Table 14 (Continued Table 12 2), Table 15 (Continued Table 12 3) ) Shows the chemical composition and surname resistance, quality of the welded part, and smelting workability of the dazzling metal formed by the covered arc ^ dry rods shown in Tables 10 to 11. Figures 12 (a) and 12 (b) show the selection of corrosion test pieces used to determine the corrosion resistance of 5 welded metals. Figure 13 shows the corrosion resistance of welded joints. Selection of corrosion test strips. As shown in Figs. 12 (a) and 12 (b), the test piece for the evaluation of the resistance to insects and insects of the smelted metal is made in accordance with the JIS corrosion test method for fused metal. That is, "In order not to be affected by the composition of the base metal, use 10 parent stream k on the ordinary steel base material 3 to connect the bottom metal layer 4 of the six layers with a current of 170A to the welded metal 2 after construction. Sheet 1 (4mmx 25mmx 25mm). The corrosion test was carried out at 80 ° C, 10% hydrochloric acid for 24 hours and 40 ° C, 20% sulfuric acid for 24 hours. 15

60 20 200303929 玫、發明說明 表12熔接金屬之化學成份、耐蝕性、熔接施工 性、綜合評價 : S9t：二 05 1240.翁 1比較例1T18丨 1比較例ΤΠ7( 1比较例W16 1比较例fl5 1比較例曹14 1比較例賣i3 1比铰例W12 1比较例W11 1比较例 1比較例ΙΤ9 ! 1比較例曹8 1 1比較例W7 1 1比校例srs 1 1比較例賓5 1 1比較例胃4 1 1比較例W3 1 1比較例f 2 1 1比粒例in 1 〇 ο Ο Ο Ο Ο Ο ο ο ο Ο ο ο ο ο ο ο 0.07〇| η 〇 Cr» Ο ο ο ο S ο Ο g 100 S ο Ο ① Ο 2 Ο Ο 100 ο &lt;Χ3 ο 080| ο cn ο ο s ο 舌 ο σ&gt; ΟΙ ο ο ο ο ο u&gt; ο σ Η ο Η ο ο cr&gt; r\3 &lt;τ&gt; CO &lt;jn tn W Μ 办 一 cn Cn Cn cn 如 ο tn cn ο ο σ ο ο Ο Ο Ο ο Ο Ο ο ο ο g ο ο 1 1·23| 1C iCk» 办 to 一 Cv&gt; — Μ 办 Μ »u. tc μ — 00 &lt;〇 CD \ο ΙΟ U1 UD 0〇 cn «U. Μ Ο ο ο ο ο ο Ο Ο Ο ο Ο ο ο ο ο ο ο ο ο ο to ο to ο ts3 ο Μ Ο ίΌ Ο CC Ο W ο ο U0 ο cn ο ο ο ο 窆 ο ο ο ο ο Μ ο ο ο ο ο Ο Ο ο ο ο ο ο ο ο ο ο ο ο VI ο S g 〇r&gt; ο σι ο α&gt; ο cn Ο g ο &lt;η ο ο ο α&gt; ο ο ο σ&gt; ο cn ο § S cn ο cn ο S ο 运 ο αν ο ο ο ο ο ο ο ο ο ο ο ο ΙΟ ο ο ο ο ο ΙΟ ο *u cn •Χκ σ&gt; »u 衾 σ&gt; 私 ο ο 芑 fO tp to Ν&gt; U5 cn 知 Cfl 09 Μ ο to ο ο ο ο ο ο ο ο ο ο Ο k ο ο ο ο ο ο 00 W 00 Ν3 00 Ν5 〇〇 to 00 to 00 ts&gt; 00 to ίο tn tc ο» Μ «ο S S σ ro Ο ο Ο ο ο ο ο ΙΟ ΙΟ ΙΟ ΕΟ |/Λ ο ο α Λ ο S ο |t〇 /S ρ ο CO ιη 100 ] 100 100 100 100 ο § % ο 知 ο ο αο ο ο |ro S Η-* § § Ο ο Ο Ο Ο ο ο ο Ο ο ο ο ο |0·002 丨 ο ο ο ο 1C ο g § Ο &lt;/ι S — ο ο to ο ο g ο ο CO ο S ο S ο S ο Μ ο S ο S ο r\ ο 八 ο U〇, 02| !·— is — ；〇 ο ο ο ο ο ο ο ο ο ο % ο ΙΟ S ο Ν) 4^ to S S S S S S σ% 办 S ；s Ο ο ο Ο ο ο ο ο ο ο ο ο ο ο ο ο ο &gt; Ο 岩 S ο ο W g ο 2 Ο S cn S UI ο ο ο ο ο Η·* ο ο ο ο ο CJ1 ο 各 ο UI σ ο Ο ο ο ο ο Ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο to ο ο ο ο ο ο ο ο ο g Ο S ο Ο ο ο ο § ο ο S ο ο g ο ο ο ο ο ο ο ο S ο ο ο U5 cn |〇. 015 [ο. osol &lt; Ι〇· 02〇| Η 0. 0201 Η 饵 |〇. 25〇| m I -9. 0 1-19.0 1 I in. 2! |ΐ43. 1 3.9 1 Ν} tc U3 兰 cn 」.δ」 •W to to Ui 锍· 1 ϊ ο ί ro σι αι 1 Ch 00 cn 1 § ν\ ϊ ·—* 00 1 ΕΗ» 1 (»_0/0) 61 200303929 玖、發明說明 表13熔接金屬之化學組成、耐蝕性、熔接施工 性、綜合評價（續表I2之1)60 20 200303929 Rose, description of invention Table 12 Chemical composition, corrosion resistance, welding construction, comprehensive evaluation of welded metal: S9t: 02 05 1240. Weng 1 comparative example 1T18 丨 1 comparative example TΠ7 (1 comparative example W16 1 comparative example fl5 1 Comparative example Cao 14 1 Comparative example sells i3 1 Comparative example W12 1 Comparative example W11 1 Comparative example 1 Comparative example IT9! 1 Comparative example Cao 8 1 1 Comparative example W7 1 1 Comparative example srs 1 1 Comparative example guest 5 1 1 Comparative Example Stomach 4 1 1 Comparative Example W3 1 1 Comparative Example f 2 1 1 Granulation Example in 1 〇ο Ο Ο Ο Ο Ο ο ο ο Ο ο ο ο ο ο 0.07〇 | η 〇Cr »ο ο ο ο S ο Ο g 100 S ο Ο ① Ο 2 Ο Ο 100 ο &lt; Χ3 ο 080 | ο cn ο ο s ο tongue ο σ &gt; ο ο ο ο ο ο u &gt; ο σ Η ο Η ο ο cr &gt; r \ 3 &lt; τ &gt; CO &lt; jn tn W Μ do one cn Cn Cn cn as ο tn cn ο ο σ ο ο Ο Ο Ο ο ο Ο Ο ο ο ο g ο ο 1 1 · 23 | 1C iCk » One Cv &gt; — Μ OfficeM »u. Tc μ — 00 &lt; 〇CD \ ο ΙΟ U1 UD 0〇cn« U. Μ Ο ο ο ο ο ο Ο Ο Ο ο ο ο ο ο ο ο ο ο ο ο ο ο to ο to ο ts3 ο Μ Ο ίΌ Ο CC Ο W ο ο U0 ο cn ο ο ο ο ο ο ο ο Μ ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο VI ο S g 〇r &gt; ο σι ο α &gt; ο cn OO g ο &lt; η ο ο ο α &gt; ο ο ο σ &gt; ο cn ο § S cn ο cn ο S ο Transport ο αν ο ο ο ο ο ο ο ο ο ο ο ο Ιο ο ο ο ο ο ΙΟ ο * u en • χκ σ &gt; »u 衾 σ &gt; Private ο ο 芑 fO tp to Ν &gt; U5 cn Known Cfl 09 Μ ο to ο ο ο ο ο ο ο ο ο ο Ο k ο ο ο ο ο ο 00 W 00 Ν3 00 Ν5 〇〇to 00 to 00 ts &gt; 00 to ίο tn tc ο »Μ« ο SS σ ro Ο ο ο ο ο ο ΙΟ ΙΟ ΙΟ ΙΟ | / Λ ο ο α Λ ο S ο | t〇 / S ρ ο ο CO ιη 100] 100 100 100 100 ο §% ο Know ο ο αο ο ο | ro S Η- * § § Ο ο Ο Ο Ο ο ο ο ο ο ο ο ο | 0 · 002 丨 ο ο ο ο 1C ο g § Ο &lt; / ι S — ο ο to ο g ο ο CO ο S ο S ο S ο Μ ο S ο S ο r \ ο Eight ο U〇, 02 |! · — is —; οο ο ο ο ο ο ο ο ο% ο ΙΟ S ο Ν) 4 ^ to SSSSSS σ% Office S s s ο ο ο Ο ο ο ο ο ο ο ο ο ο ο ο &gt; Ο Rock S ο ο W g ο 2 ο S cn S UI ο ο ο ο ο ο * · * ο ο ο ο ο ο CJ1 ο each ο UI σ ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο ο to ο ο ο ο ο ο ο ο g ο S ο ο ο ο ο § ο ο ο ο ο ο ο ο ο ο ο ο S ο ο U5 cn | 〇. 015 [ο. osol &lt; Ι〇 · 02〇 | Η 0. 0201 Η bait | 〇. 25〇 | m I -9. 0 1-19.0 1 I in. 2 ! | ΐ43. 1 3.9 1 Ν} tc U3 cncn ”.δ ″ • W to to Ui 锍 · 1 ϊ ο ro ro σι αι 1 Ch 00 cn 1 § ν \ ϊ · — * 00 1 ΕΗ» 1 (» _0 / 0) 61 200303929 发明, Description of invention Table 13 Chemical composition, corrosion resistance, welding workability, comprehensive evaluation of weld metal (continued table I2-1)

B 茌 ff ?? 托 m η η η η n η m 想 η m m m m 笼 銮 m 00 — *&lt;1 — cn cn 3«t 謂 — ο m η-· tN5 m Ο m VD m on m Οί 5 2 顧 U3 m to »旬 dQ W — 00 Ν3 cn 26· 7 CO «〇 Η-* Ul U5 to U3 to ω CO 办 〇» ω ω to CO KO &gt;雜 私 oo u&gt; to t— CD 00 •^1 »—· CO to •ο US w cn ®Μ η Jr娣 m X X X X X X X &gt; X ◎ X X X X X X X X 賻 m 漭 0. 88 〇 •^4 0¾ 〇 Cn ·κ| o CD U) 〇 Ο to CO o 00 cn Cn Η-» •vj Η- tn cn | 0.35 — cn μ·# Η·* w cu — — 一 -4 ·— u&gt; l£&gt; — — y\ 〇r&gt; 3 um l| ar m ◎ © €) ◎ ◎ ◎ ◎ t&gt; X ◎ X X X X X X X X η m 漭 〇 〇 〇 0 ο 〇 〇 X 〇 X 〇 0 〇 〇 〇 〇 〇 〇 X X X X X X X X X X X X X X X X X X m m w m 薪 m m i S m S m m m m 灌 陬 燁 « H ®: 激 瑯 m m 隳 Q&gt; 漭 漭 I •&gt;1 -&gt;1 &gt;i -&gt;ΐ m 佃 袖 62 200303929 玫、發明說明 表14熔接金屬之化學組成、耐蝕性、熔接施工 性、綜合評價（續表12之1)(質量％ ) i-n · i ϋ i - 1本發明例w53 j本發明例W52 -Ν' 激 3 m a« C/&gt; ¥ m σ 1本赛明例冒49 1本發钥例賣48 1本#明例W47 1本赛明例胃《 i本發明例曹45 丨本發明例1Γ44 Μ η 涩 謂 !本發明例育42 丨本荽明例141 j本發明例W40 1本發明例rj9 j本發明例W38 钟 啪 at οα !本發明例冒36 1本發明例W35 1本發明例W34 1本卷明例m |本鸯明例買32! 丨本發明例W31J 1不發明例W30| 1本發明例W29| 序發明钶时8j 坳 3 -xl 1本赛明钾Ϊ26| 1本麥明例f2S| ¾ • 麵 to 1本赛明例T23j 本發明例f22 1本發明例打1| Ο Ο Ο ο Ο Ο Ο 〇 Ο Ο Ο ο Ο Ο 〇 Ο ο Ο Ο Ο σ 〇 Ο Ο Ο 0 〇 Ο 0 0 〇 〇 Ο ο ο ο Ο ο 办 040 040 ο ο ο ο 〇 ο 030 ο tU 0 Ο ο s 0 〇 itw 2 Ο ο Α. Ο 办 ο ο σ S 030 s 0 Ο ο g 0 ο s 0 g 〇 s 0 0 s 0 s 〇 050 140 ο ο ο Ο Ο ο ο 〇 ο Ο 0 0 ο 0 0 Ο ο Ο ο 0 Ο 0 ο 0 0 0 0 0 0 0 〇 〇 Ο CO ext ι-ο σ&gt; Ν5 ο ΙΌ art to cr&gt; Ν3 cn W cn ro cn ΪΟ to σι ΓΟ Οί to σ； to (Λ Ν5 cn CO cn K5 ¢7¾ tc Ο) tN5 &lt;τ&gt; ts3 ο ts&gt; σ&gt; &lt;Ό cn VO cn Is3 σ&gt; to cn ΓΟ &lt;η CO σ&gt; to CT&gt; K&gt; CTi N3 Φ σ· cc cn C (Ti ro j〇. 42 Ο Ν&gt; Ο r. 1 0. 42 1 0. 42 ο Κ3 j〇. 42 |0, 42 |0. 42 ο Μ |〇. 42 1 0. 4 2 |0. 42 \0.42 1 0. 42 j〇. 42 1 0. 42 0 |0. 42 Ο 0 办 to 〇 [0. 42 ! 1〇·^1 |ο.49 j Ο 办 ΙΟ 10.49 Ο 私 tc |0.49 I 10.42 0. 42 1 0. 42 1 0. 42 I tc 0 Ο Ο ο Ο Ο ο Ο Ο Ο ο Ο Ο Ο 〇 〇 Ο Ο 0 Ο ο 0 〇 Ο Ο Ο ο 0 0 〇 〇 〇 〇 Ο ο Ρ〇 Ο — ο Κ) ο Μ Ο Μ ο ts3 Ο NJ Ο Ν3 Ο to ο Ν3 012 Ο tc ο 〇 to 〇 fN5 Ο VO Ο to 0 Ο to ο ΙΟ 0 ts&gt; 〇 Ο ο § ο ο ο 0 (〇 0 to 〇 〇 § 〇 w 〇 ts3 ο Ν» ο ο ο ο ο Ο Ο Ο ο Ο Ο 0 ο 0 〇 Ο 0 ο 0 ο Ο 〇 ο ώ (6 0 0 |0. 012| 〇 〇 cb 丨.0006| 0. 006j Ο Ο g tn ο g ο 宝 ο g 006 ο 宝 ο § ο § 006 ο § ο g Ο § 0 g ο σι 0 〇&gt; 〇 cn Ο 006 ο 宝 0 cn ο σ&gt; ο s 〇 s σ % ο to ο tc 0 &lt;0 0 to 0 当 ο ο ο ο ο ο ο Ο ο 0 ο 0 ο 0 0 Ο Ο ο 0 ο 0 0 ο 0 0 σ 0 〇 〇 o 〇 〇 0」6 Γ&gt; JU. cn 尝 »tw cn 尝 tCW σ&gt; 釦 cn 4W cn σ» 办 Οι ίΤϊ σ&gt; 尝 兰 含 »u. cn 办 α&gt; 05 知 cr&gt; 办 cn CO CO W to u&gt; to tu to w to 一 to a&gt; % cn ο ο α ο ο ο ο ο ο ο Ο o ο o 0 ο ο ο 0 ο 0 〇 0 0 0 0 0 0 o 0 〇 0 Ο Ν&gt; οο Ν5 οο 1*0 CO to CO to C» κ&gt; CO rc QG to 00 κ&gt; οο to 〇〇 tsD 00 Of; 00 tO CO ts&gt; OQ Μ 00 00 to 00 Μ 00 w οα to CO 00 CO 00 03 tn u&gt; Cn ua cn tc tn s u&gt; cn CO zn t\5 00 to 00 Ν3 00 ο ο ο ο ό ο Ο ο ο Ο 0 0 Ο 〇 〇 σ ο 0 0 ο 0 0 Ο Ο Ο 〇 0 0 a 〇 0 〇 Q (Λ cr ο ο § ο g ο 00 ο ο οα ο g Ο g 150 \ § 150 0 00 0 120 \ 100 〇 *-* 〇 ο ο g 0 若 0 g g Ο 0 g § 〇 S ο 195 135 ts3 〇 0 0 00 cr* 0 00 tn 〇 若 100 100」 180」 ο ο ο ο Ο ο ο Ο ο ο 0 0 0 〇 〇 ο 0 ο 0 ο 0 〇 ο Ο Ο 〇 0 0 〇 o 〇 0 Ο SC Q g g ο cn «—· g S % ►—· 1 Ο 0 0 g 〇 〇 g § 100 § ο 0 S CJ1 0 cn g g Μ Ο ο ο s 0 — cn s CJ1 cn 0 s 〇 s Ο S ο S |〈0· 02 |&lt;0. 02； |&lt;0. 02 |&lt;0. 02| |&lt;0. 02 八 ο S [&lt;0. 02 &lt;0,02 |&lt;0. 02 |&lt;0. 02 |&lt;0. 02 |&lt;0. 02 |&lt;0. 02 |&lt;0. 02 1 0. 49 A S 「&lt;0. 02 A 0 to 0 s 1 〇. 10 1 0.05 ! 八 Ο to A 0 &gt;N 〇 g /V s s 0 to |&lt;0. 02j 八 s A s &lt;0.021 八 ο Ο η ο ο Ο ο Ο ο Ο ο Ο Ο 0 0 Ο 〇 〇 Ο Ο 0 〇 0 0 0 0 0 0 〇 0 0 〇 0 0 〇 ρ ο *〇 ο &quot;ο S cn 'ο&quot; S 〇Ί *〇* S υ\ &quot;ο c/t &quot;ο ο to C/i o' S cn Id S cn &quot;ο cn S cn S cn 万 0 N&gt; cn 31 S ϋι &quot;ο tn 3 cn cn &quot;〇 S cn *0 S νη *〇 〇 cn g cn 3&quot; s ui &quot;ο s in g cn &quot;ο 0 cri 〇* 0 cn 〇* 〇 a* 〇 0 tn cT 0 〇1 'o 〇 cn &quot;o' 0 cn 0 — 〇 &quot;o &gt; ο S ο ο S ο g ο 0090| 0090 ο S 0090] ο ο Ο g 0 g Ο s 0 0 ο § 0 〇 〇 U3 〇 Ο Ο Ο Ο Φ 〇 s 0 0 s 00901 0090 Ο ο Ο Ο 0090 0 ① o 0 g 0 若 0 〇 S 〇 0 0090| ο 2； [0. 009! |0. 009 Ο Ο [0. 0051 jo. 005 jo. 012 [0. 010j |0. 010! [0. 010 •Η [0. 0!0| [0. 0101 |ο. οιο； [0. 100 [0. 120 m I Pd:0.2 1 丨 Ag:0.3 ! ! Βί :0.05 ! !Se:0. 01 Te:0. 01 1 . Pb:0.1 1 1 Sn; 0. 0-1 ι 1 R£«:0.001 1 Ca:0.001 I_m_1 Ν2 ο σ&gt; to ο cn to Ο cn Ο cn CO •ο Ch ΓΟ ο an Ο 0 21-0 0 to cn to tn -4 g in ro CO g 00 w 0 L2JM tr\ CO CO 〇 K&gt; tn KD tU 01 σ&gt; ο [ΰϋ] C'C ΙΟ CO Oi CJ tc to tc -4 〇 κο ΙΝ5 L^JJ iU ει條| 63 200303929 玫、發明說明 表15熔接金屬之化學組成、耐蝕性、熔接施工 性、綜合評價（續表I2之3) 钟 a 宠 to 輕 cn to — 锄 32 m S Ή 坳 笼 1£&gt; 讲 蝴 宝 00 Η ί S «1 -4 σι J 碱 tf&gt; ； 3 m X *cw 1 m 宠 1 w 锄 a 流 r ΙΌ i s 宠 r 劫 a 笼 r O •H a 沒 m u&gt; 山 •H Ά m 00 m 3 激 混 s s σ&gt; •H m m s S Ui 斜 _ s _ CO tx m m 宠 3 CO •H 笼 m CO N? 料 薄 宠 m ι&gt;&gt; 慵 m 〇 斜 m m 宠 _ CO ¾ 餺 宠 to 00 •K m m 宠 Η 3 宠 m fO Οι 斜 3 笼 cn 斜 幽 m m 办 卅 3 宠 Μ to W 啪 Μ % 5 to 3 〇 ro ^4 〇 cn cn 二 cn ΓΟ -4 〇 〇1 — VO cn ο to to σϊ cn cn Λη XO cn u\ UD 00 〇&gt; to OD •CW cn a% cn 00 U1 α&gt; cn tjn cn tO o tU cn U»- tx\ cn -4 »tw cn -S» cn cn S Ci U3 to αι CO 〇ι 杯 ΙΟ cn 00 ίΛ «s掰 ◎ ◎ ◎ ◎ ◎ ◎ @ @ ◎ ◎ ◎ @ ◎ ◎ @ ◎ ◎ ◎ ◎ ◎ @ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 雜 η 聪 〇 00 〇 cn «C 〇 Cn 03 〇 cn 〇 vy c-n 〇 〇fi CO 0 01 N9 ο Ο) o CTi o ϋ、 v\ o U1 o 〇1 o m o cn oo o O CJi 〇 ο Cn iO O cr&gt; iU o σ&gt; an o tn ID o Ui 〇 &lt;Tt Cn 〇 〇i ο m 〇 Cft ο φ Cn o ο oo ο οα Ο νπ i0 ο u? 00 u s t麗 ί ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ·◎ ◎ ◎ © ◎ &lt;§&gt; ◎ ◎ ◎ η η m 薄 0 〇 Ο 〇 〇 〇 〇 〇 〇 O o 〇 0 〇 0 〇 〇 o 〇 0 〇 o 〇 〇 ο 〇 〇 0 〇 ο 〇 〇 〇 I ◎ ❿ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ©' © ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ! 64 200303929 玖、發明說明 首先，就表12、表13 (續表12之1)、表14 (續表 12之2)、表15 (續表I2之3)所示之比較例之熔接金屬 (以下稱為比較熔接金屬）W1〜W18、本發明例之熔接金 屬（以下稱為本發明熔接金屬）W21〜W53之耐鹽酸性及 5 财硫酸性加以說明。B 茌 ff ?? tom m η η η η n η m think η mmmm cage 銮 m 00 — * &lt; 1 — cn cn 3 «t term — ο m η- · tN5 m Ο m VD m on m Οί 5 2 Gu U3 m to »Xd dQ W — 00 Ν3 cn 26 · 7 CO« 〇Η- * Ul U5 to U3 to ω CO »ω ω to CO KO &gt; Miscellaneous oo u &gt; to t— CD 00 • ^ 1 »— · CO to • ο US w cn ®Μ η Jr 娣 m XXXXXXX &gt; X ◎ XXXXXXXX 赙 m 漭 0.88 〇 • ^ 4 0¾ 〇Cn · κ | o CD U) 〇〇 to CO o 00 cn Cn Η- »• vj Η- tn cn | 0.35 — cn μ · # Η · * w cu — — a-4 · — u &gt; l £ &gt; — — y \ 〇r &gt; 3 um l | ar m ◎ © €) ◎ ◎ ◎ ◎ t &gt; X ◎ XXXXXXXX η m 漭 〇〇〇〇0 ο 〇〇X 〇X 〇0 〇〇〇〇〇〇〇〇XXXXXXXXXXXXXXXXXX mmwm salary mmi S m S mmmm infusion «H ®: excitement mm隳 Q &gt;漭 漭 I • &gt; 1-&gt; 1 &gt; i-&gt; ΐ m 佃 sleeve 62 200303929 Rose, description of invention Table 14 Chemical composition, corrosion resistance, welding workability, comprehensive evaluation of weld metal (continued table 1 of 1) ) (Mass%) in · i ϋ i-1 Example of the present invention w53 j Example of the present invention W52 -N 'Excited 3 ma «C / &gt; ¥ m σ 1 This sampling example 49 1 This key issue example sells 48 1 Ben # 明 例 W47 1 Ben Saiming stomach "i This invention example Cao 45 丨 this invention example 1Γ44 Μ η astringent! This invention example breeds 42 丨 this invention example 141 j this invention example W40 1 this invention example rj9 j Example of the present invention W38 Bell pop at οα! Example of the present invention 36 1 Example of the present invention W35 1 Example of the present invention W34 1 Example of this volume m | Example of the present purchase 32 | 丨 Example of the present invention W31J 1 Example of no invention W30 | 1 Example of the invention W29 | Preface invention time 8j 坳 3 -xl 1 Bensaimin potassiumΪ26 | 1 Benmaiming example f2S | ¾ • To to 1 Bensaiming example T23j Invention example f22 1 Invention example 1 | 〇 Ο Ο ο Ο Ο Ο 〇〇 Ο Ο ο Ο Ο 〇〇 ο Ο Ο Ο σ 〇〇 Ο Ο 0 〇〇 0 0 〇〇〇 ο ο ο Ο ο Office 040 040 ο ο ο ο ο 030 ο tU 0 Ο ο s 0 itw 2 Ο ο Α. Ο Office ο ο σ S 030 s 0 Ο ο g 0 ο s 0 g 〇s 0 0 s 0 s 〇050 140 ο ο ο Ο Ο ο ο 〇ο 〇 0 ο 0 0 ο ο ο Ο ο 0 Ο 0 ο 0 0 0 0 0 0 0 〇〇〇 CO ext ι-ο σ &gt; Ν5 ο ΙΌ art to cr &gt; Ν3 cn W cn ro cn ΪΟ to σι ΓΟ Οί to σ; to (Λ Ν5 cn CO cn K5 ¢ 7¾ tc Ο) tN5 &lt; τ &gt; ts3 ο ts &gt; σ &gt; &lt; Ό cn VO cn Is3 σ &gt; to cn ΓΟ &lt; η CO σ &gt; to CT &gt; K &gt; CTi N3 Φ σ · cc cn C ( Ti ro j〇. 42 Ο Ν &gt; Ο r. 1 0. 42 1 0. 42 ο Κ3 j〇. 42 | 0, 42 | 0. 42 ο Μ | 〇. 42 1 0. 4 2 | 0. 42 \ 0.42 1 0. 42 j〇. 42 1 0. 42 0 | 0. 42 Ο 0 Office to 〇 [0. 42! 1〇 · 1 | ο. 49 j Ο Office ΙΟ 10.49 〇 Private tc | 0.49 I 10.42 0 42 1 0. 42 1 0. 42 I tc 0 Ο Ο Ο Ο ο Ο Ο Ο ο Ο Ο Ο 〇〇〇〇 Ο 0 Ο ο 0 〇〇 〇 ο 0 0 〇〇〇〇〇〇 ΡΟΟ — Ο Κ) ο Μ Ο Μ ο ts3 Ο NJ Ο Ν3 Ο to ο Ν3 012 Ο tc ο 〇to 〇fN5 Ο VO 〇 to 0 〇 to ο ΙΟ 0 ts &gt; 〇OO ο § ο ο ο 0 (〇0 to 〇〇§ 〇w 〇 ts3 ο Ν »ο ο ο ο ο Ο Ο Ο ο Ο Ο 0 ο 0 〇〇 0 ο 0 ο Ο 〇ο ώ (6 0 0 | 0. 012 | 〇〇cb 丨 .0006 | 0. 006j Ο Ο g tn ο g ο treasure ο 006 ο treasure ο § ο § 006 ο § ο g Ο § 0 g ο σι 0 〇 &gt; 〇cn Ο 006 ο treasure 0 cn ο σ &gt; ο s 〇s σ% ο to ο tc 0 &lt; 0 0 to 0 When ο ο ο ο ο ο ο Ο ο 0 ο 0 ο 0 0 Ο Ο ο 0 ο 0 0 ο 0 0 σ 0 〇〇o 〇〇0 '' 6 Γ &gt; JU. Cn taste » tw cn try tCW σ &gt; deduct cn 4W cn σ »ΟΟι ίΤϊ σ &gt; 兰兰 含» u. cn αα &gt; 05 知 cr &gt; cncn CO CO W to u &gt; to tu to w to one to a &gt;% cn ο ο α ο ο ο ο ο ο ο Ο o ο o 0 ο ο ο 0 ο 0 〇0 0 0 0 0 0 0 0 〇 0 Ν &gt; οο Ν5 οο 1 * 0 CO to CO to C »κ &gt; CO rc QG to 00 κ &gt; οο to 〇〇tsD 00 Of; 00 tO CO ts &gt; OQ Μ 00 00 to 00 Μ 00 w οα to CO 00 CO 00 03 tn u &gt; Cn ua cn tc tn s u &gt; cn CO zn t \ 5 00 to 00 Ν3 00 ο ο ο ο ό ο Ο ο ο Ο 0 0 〇〇〇σ ο 0 0 ο 0 0 Ο Ο Ο 〇0 0 a 〇0 〇Q (Λ cr ο ο § ο g ο 00 ο ο οα ο g Ο g 150 \ § 150 0 00 0 120 \ 100 〇 *-* 〇ο ο g 0 If 0 gg 〇 0 g § 〇S ο 195 135 ts3 〇0 0 00 cr * 0 00 tn 〇If 100 100 ″ 180 ″ ο ο ο ο ο ο ο Ο ο ο 0 0 0 〇〇ο 0 ο 0 ο 0 〇ο Ο 〇 〇0 0 〇o 〇0 〇 SC Q gg ο cn «— · g S% ►— · 1 〇 0 0 g 〇〇g § 100 § ο 0 S CJ1 0 cn gg Μ Ο ο ο s 0 — cn s CJ1 cn 0 s 〇 S ο S | <0 · 02 | &lt; 0. 02; | &lt; 0. 02 | &lt; 0. 02 | | &lt; 0. 02 eight ο S [&lt; 0. 02 &lt; 0,02 | &lt; 0. 02 | &lt; 0. 02 | &lt; 0. 02 | &lt; 0. 02 | &lt; 0. 02 | &lt; 0. 02 1 0. 49 AS 「&lt; 0. 02 A 0 to 0 s 1 〇. 10 1 0.05 ! 〇 〇 to A 0 &gt; N 〇g / V ss 0 to | &lt; 0. 02j s s A s &lt; 0.021 ο ο Ο η ο ο Ο ο Ο ο Ο ο Ο Ο 0 〇 〇〇〇〇Ο 0 〇0 0 0 0 0 〇0 0 〇0 0 〇ρ ο * 〇ο &quot; ο S cn 'ο &quot; S 〇Ί * 〇 * S υ \ &quot; ο c / t &quot; ο ο to C / io 'S cn Id S cn &quot; ο cn S cn S cn 0 0 &gt; cn 31 S & ι &quot; ο tn 3 cn cn &quot; 〇S cn * 0 S νη * 〇〇cn g cn 3 &quot; s ui &quot; ο s in g cn &quot; ο 0 cri 〇 * 0 cn 〇 * 〇a * 〇0 tn cT 0 〇1 'o 〇cn &quot; o' 0 cn 0 — 〇 &quot; o &gt; ο S ο ο S ο g ο 0090 | 0090 ο S 0090] ο ο ο g 0 g ο s 0 0 ο § 0 〇〇U3 〇〇 Ο Ο Φ 〇s 0 0 s 00901 0090 Ο ο Ο Ο 0090 0 ① o 0 g 0 if 0 〇S 〇0 0090 | ο 2; [0. 009! | 0. 009 Ο Ο [0. 0051 jo. 005 jo. 012 [0. 010j | 0. 010! [0. 010 • Η [0. 0! 0 | [0. 0101 | ο. Οιο; [0. 100 [0. 120 m I Pd: 0.2 1 丨 Ag: 0.3!! Βί: 0.05 !! Se: 0. 01 Te: 0. 01 1. Pb: 0.1 1 1 Sn; 0. 0-1 ι 1 R £ «: 0.001 1 Ca: 0.001 I_m_1 Ν2 ο σ &gt; to ο cn to Ο cn Ο cn CO • ο Ch ΓΟ ο an Ο 0 21-0 0 to cn to tn -4 g in ro CO g 00 w 0 L2JM tr \ CO CO 〇K &gt; tn KD tU 01 σ &gt; ο [ΰϋ] C'C ΙΟ CO Oi CJ tc to tc -4 κο ΙΝ5 L ^ JJ iU ει bar | 63 200303929 Rose, description of invention Table 15 Chemical composition, corrosion resistance, welding workability, comprehensive evaluation of weld metal (continued Table I2-3) Zhong a pet to light cn to — 锄 32 m S Ή 坳 Cage 1 £ &gt; Talking Butterfly 00 00 Η S «1 -4 σι J ttf &gt;; 3 m X * cw 1 m pet 1 w 锄 a flow r ΙΌ is pet r rob a cage r O • H a no m u &gt; mountain • H Ά m 00 m 3 mixing ss σ &gt; • H mms S Ui oblique_ s _ CO tx mm pet 3 CO • H cage m CO N? material thin pet m ι &gt; &gt; 慵 m 〇 oblique mm pet _ CO ¾ 馎 pet to 00 • K mm pet Η 3 pet m fO Οι oblique 3 cage cn oblique mm 卅 3 pet Μ to W pat ％% 5 to 3 〇ro ^ 4 〇cn cn cn ΓΟ -4 〇〇1 — VO cn ο to to σϊ cn cn Λη XO cn u \ UD 00 〇 &gt; to OD • CW cn a% cn 00 U1 α &gt; cn tjn cn tO o tU cn U »-tx \ cn -4 »tw cn -S» cn cn S Ci U3 to αι CO 〇ι Cup ΙΟ cn 00 ίΛ «s 掰 ◎ ◎ ◎ ◎ ◎ ◎ @ @ ◎ ◎ ◎ @ ◎ ◎ @ ◎ ◎ ◎ ◎ @ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ Miscellaneous η Cong 〇00 〇cn «C 〇Cn 03 〇cn 〇vy cn 〇〇fi CO 0 01 N9 ο 〇) o CTi o ϋ, v \ o U1 o 〇1 omo cn oo o O CJi 〇ο Cn iO O cr &gt; iU o σ &gt; an o tn ID o Ui 〇 &lt; Tt Cn 〇〇i ο m 〇Cft ο φ Cn o ο oo ο οα Ο νπ i0 ο u? 00 ustLi ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ © ◎ &lt; § &gt; ◎ ◎ η η m thin 0 〇 〇 〇〇〇〇〇〇〇〇〇 〇 〇 〇 〇 〇 〇 0 〇 0 〇 0 〇o 〇〇ο 〇〇0 〇ο 〇〇〇〇I ◎ ❿ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ © '© ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎! 64 200303929 玖, DESCRIPTION OF THE INVENTION First, the weld metals (hereinafter referred to as comparisons) of the comparative examples shown in Tables 12 and 13 (continued table 12-1), 14 (continued table 12-2) and 15 (continued table I2-3) Welding metals) W1 to W18, the welding metals of the examples of the present invention (hereinafter referred to as the welding metals of the present invention) W21 to W53, the hydrochloric acid resistance and the sulphuric acid property will be described.

比較例W1為由軟鋼用之熔接材料所得之熔接金屬， 由於Cu、Ni、Sb在本發明之範圍外，故而t硫酸性及而才鹽 酸性較本發明熔接金屬W21〜W53差。 比較例W2為由習知耐硫酸性鋼用之熔接材料所得之 10 熔接金屬，由於Sb、Ni在本發明範圍外，故耐硫酸性及 耐鹽酸性較本發明熔接金屬W21〜W53差。 比較例W3為由Cu—Cr系之耐硫酸露點腐蝕鋼用之 熔接材料所得之熔接金屬，由於Sb、Ni及Cr在本發明範 圍外，故耐硫酸性及耐鹽酸性較本發明熔接金屬 15 W21 〜W53 差。Comparative example W1 is a welding metal obtained from a welding material for soft steel. Since Cu, Ni, and Sb are outside the scope of the present invention, t sulfuric acid and salt acidity are inferior to the welding metals W21 to W53 of the present invention. Comparative example W2 is a 10 weld metal obtained from a conventional weld material for sulfuric acid-resistant steel. Since Sb and Ni are outside the scope of the present invention, sulfuric acid resistance and hydrochloric acid resistance are inferior to those of the weld metal W21 to W53 of the present invention. Comparative Example W3 is a weld metal obtained from a welding material of Cu—Cr based sulfuric acid dew point corrosion resistant steel. Since Sb, Ni, and Cr are outside the scope of the present invention, the sulfuric acid resistance and hydrochloric acid resistance are better than the weld metal of the present invention. 15 W21 to W53 are poor.

比較例W4由於過量地含有P在本發明之範圍外，故 而十硫酸性及财鹽酸性較本發明炼接金屬W21〜W53差。 比較例W5由於過量地含有S在本發明之範圍外，故 耐硫酸性及耐鹽酸性優異，但於熔接金屬產生裂紋，且熔 20 接施工性及熔接部品質明顯地較本發明熔接金屬鋼差。 比較例W6由於Cu未到本發明之下限，故财硫酸性 及耐鹽酸性較本發明熔接金屬W21〜W53差。 比較例W7由於Ni、Sb未到本發明之下限，故耐硫 酸性及耐鹽酸性較本發明熔接金屬W21〜W53差。 65 200303929 玖、發明說明 比較例8及比較例10由於Sb未到本發明之下限， 故而ί硫酸性及财鹽酸性較本發明溶接金屬W21〜W53差。 比較例W9及比較例Wl 1由於sb超過本發明之上限 ’故溶接施工性明顯地較本發明溶接金屬W21〜W53差。 5 比較例W12由於耐酸性指數AI值為一 19.0，而在本 發明之範圍外（ΑΙ — 0 )’故财鹽酸性明顯地較本發明溶接 金屬W21〜W53差。 比較例W13由於耐酸性指數ΑΙ值為一 9.0,而在本 發明之範圍外（ΑΙ - 0 )’故耐鹽酸性明顯地較本發明溶接 10 金屬W21〜W53差。 比較例W114〜18由於耐酸性指數ΕΙ值在本發明之範 圍外（El S 0 )，故耐鹽酸性明顯地較本發明熔接金屬 W21 〜W53 差。 如上述，可知本發明熔接金屬W21〜W53耐硫酸性、 15 耐鹽酸性及熔接施工性皆優異。 其次，使用表10〜表11所示之本發明熔接材料與表 16、表17所示之母材7 (板厚16mm)，以電流170A、溶 接熱量輸入17〜19Kj/cm，試作向下形態之相向熔接接頭 ，為使炫接金屬6與母材7之面積比為1:2，而從第13 20圖所示之位置，選取熔接接頭之腐蝕試片5 ( 4mmx 25mmx 60mm) ’而以與上述相同之條件進行浸潰腐兹試 驗，而調查了溶接接頭部之耐蝕性。將其結果顯示於表 16、表 17 ° 200303929 玫、發明說明 表16相向熔接接頭熔接金屬之化學成份、耐蝕 性（之1 )Comparative Example W4 contains P excessively out of the range of the present invention, and therefore, its decasulfuric acid and hydrochloric acid properties are inferior to those of the metallurgical metals W21 to W53 of the present invention. Comparative Example W5 contains S excessively out of the scope of the present invention, so it has excellent sulfuric acid resistance and hydrochloric acid resistance, but cracks occur in the weld metal, and the weldability and weld quality of the weld 20 are significantly higher than the welded metal steel of the present invention. difference. In Comparative Example W6, since Cu does not reach the lower limit of the present invention, its sulfuric acid and hydrochloric acid resistance are inferior to those of the weld metals W21 to W53 of the present invention. In Comparative Example W7, since Ni and Sb did not reach the lower limit of the present invention, sulfur and acid resistance and hydrochloric acid resistance were inferior to those of the weld metals W21 to W53 of the present invention. 65 200303929 发明 Description of the invention Comparative Example 8 and Comparative Example 10 Because Sb does not reach the lower limit of the present invention, the sulfuric acid and hydrochloric acid properties are inferior to the fused metals W21 to W53 of the present invention. In Comparative Example W9 and Comparative Example W11, since sb exceeds the upper limit of the present invention, the welding workability is significantly inferior to that of the welding metals W21 to W53 of the present invention. 5 Comparative Example W12 has an acid resistance index AI value of -19.0, and is outside the scope of the present invention (ΑΙ-0) ', so the hydrochloric acid property is significantly inferior to that of the fused metals W21 to W53 of the present invention. Comparative example W13 has an acid resistance index A1 value of 9.0, and is outside the range of the present invention (A1-0) ', so the hydrochloric acid resistance is significantly inferior to that of the present invention 10 metal W21 to W53. In Comparative Examples W114 to 18, since the value of the acid resistance index EI was outside the range of the present invention (El S 0), the hydrochloric acid resistance was significantly inferior to that of the weld metals W21 to W53 of the present invention. As described above, it is understood that the weld metals W21 to W53 of the present invention are excellent in sulfuric acid resistance, 15 hydrochloric acid resistance, and welding workability. Next, using the welding material of the present invention shown in Tables 10 to 11 and the base material 7 (plate thickness 16 mm) shown in Tables 16 and 17, a current of 170 A and welding heat input of 17 to 19 Kj / cm were used to test the downward shape. For the opposite fusion joint, in order to make the area ratio of the dazzling metal 6 and the base metal 7 to 1: 2, select the corrosion test piece 5 (4mmx 25mmx 60mm) of the fusion joint from the position shown in Figures 13 and 20 to The immersion corrosion test was performed under the same conditions as above, and the corrosion resistance of the welded joint portion was investigated. The results are shown in Table 16, Table 17 ° 200303929 Rose, Description of the invention Table 16 Chemical composition and corrosion resistance (1)

趙 Μ 2 — 嫌 Μ S H a «-η k m M 宠 &lt;-H k m ss 宠 «-4 yi •Η m Μ 宠 L-« -H- •k 賻 Ί&amp; s — K 磡 宠 *m4 η 宠 «U η· 宠 Um U3 Sf 宠 s 3蠢 1 i k m' 〇 00 ：ι ο -sJ k 耋 r&gt; &gt;u σ» n 艚 Ά m r&gt; •ft m m 被 rs u» cn h: 雠 m m n u&gt; &lt;Ta m m 3BT o Ud CD 雎 躉 o U9 cn 如 蝴 Μ m ο U) Cn 如 煳 麕 ο w cn 汗 33P 畫 &gt;· to ff &gt; Μ » &gt; i i 幽 S IU&gt; 锄 笼 am u&gt; N? ή m Μ 3fe m u&gt; tr 鳓 CO 00 科 堋 Μ Μ JL·. Uw 如 m m 宠 m cn +r m Ά 3&amp; m *u&gt; 妨 螓 s&amp; 2r _ 〇 如 锄 a? _ u» ΙΟ 茌 » 宠 m tc ¾ m 衷 m ο ?F «Ρ _ to 5S5P S m — li 3S 〇 〇 09 〇 o s o 〇 o 私 o o o o Ο Ο ο o o o o 2 〇 O o o Ο 2 Ο o s tn Ο 2 Ο Ο s tn o o s o 讓 iV 蠢 Π _ 〇 Oi o CTi to o CT4 o cn to ο σ&gt; Κ5 0 01 cc o on to o cr&gt; Ο σ&gt; o S Ο ατ&gt; fO Ο tn Ο o cri σ· to Ο tU to o 私 to 〇 to O «〇 Ο «XV ΙΟ o to o Uft. CO o 办 Cv5 ο ▲ o iCW to ο to Ο (ftW to ro 0Λ mec Ο Ο o o o o Ni o o to ο Ο to o o ro o o to 〇 〇 ΙΌ ο ο «S3 o o u&gt; Ο ο Is3 Ο Ο u o § -σ Ο ο ο σ&gt; o o σ» o o Cfi o o s ο ο ο σι o o s o o s 〇 o s Ο Ο σ» o o cn Ο ο α&gt; σ ο &lt;η o o s uo ο σ&gt; o 〇&gt; o a*·» CD o A, cn ο Οϊ o 办 cn o 办 cn o cn ο 09W σ&gt; o 岂 ο •U. σι Ο U3 Ο o cs ro o ο Ν&gt; σο o ΝΪ 00 〇 to Οϋ o to 〇〇 ο Γ〇 οο o to 00 o to oo o to « ρ to 0〇 o % ο w α&gt; ο b o s a; ο ο αα ο 〇 s o o s o o 〇 ο S o o oo o o o o o ο S ο |〇 o t-0 ο ο g JO ο ΓΌ o o to C/J cr ο 私 o o 泊 o 2 u&gt; o o tn ο ο ο o o s o o Cn Η-» o s o ο ζ o o s ο ο Cn — Ο Ο S o o o f ρ S o o o o tn 八 O K3 ο ο tc o s o o to A o s ο ϊ o s Ο ϊ ο ο ro o g 〇 ο ο υη o o &lt;〇 tn •o o tc cn 〇 〇 to cri ο ο cn o o N5 tn o s til o o tc tXi ο ο to &lt;J&gt; o o o Ο ο to tn ο ο o N5 &gt;- ο ο ο o o o o § o O o s ο g ci 0 1 o o S o o o o s ο ο S ο o o Ο Ο ο to ο σ ο ο o o o se o o ο ο tn &lt; ο ο ο o o o — o o o —* _ 67 200303929 玖、發明說明 表17相向熔接接頭熔接金屬之化學成份、耐蝕 性（之2 ) 妨 m a s 1 钭 m (iS S 一 00 -Η· m 涅 &lt;—1 •St 钟 cn 料 as tn 料 m *mU 料 m s 宠 &lt;-H CO m 窗 — ro 钭 雠 S Μ cf »4w 笼 («1 U» SP 笼 C-* CO f? t—! S· -Η- 涩 m tr&gt; oo M· m 宠 ο -J 件 m 涩 m ο «D» σ% ¥c m m o 卅 m 期 ο w 钟 m s m 〇 CO CTi 斜 m ο u&gt; cn 钭 w m m r&gt; LO crv 斜 丨幽 迪 S cn 卄 m m m S o 茌 η m to 扞 m I I 斜 S CO .讲 丨嘩 _ u&gt; to •η 鴦 ?«e «Λ&gt; — •H _ CP oc 卄 瑚 Μ at 奸 m M / «β Μ Oi 卡!· m mi 4*ι&gt; N**· ΰ 涅 Mt vU^ 料 醺 03 N3 汗 _ to 钭 m .涟 &gt;^Λ _ W ff _ i籠 ts3 cr» to cn to 私 UD to to 0¾ U&gt; to 〇 J£&gt; ts&gt; p CO to -a p ►—· Ν3 ρ cn u&gt; ί—· to to 篇i &gt;- i 沸 m S y* CO ca cn CO cn u&gt; — oo ►—· ΟΛ cn Ο CO cn o W&gt; Oi 〇 u» pi o ο CD 〇&gt; cn o α» ο cn Ο cn 〇 to Crt jr&gt; σ&gt; V-4 CO U3 oo ID CO •^4 UX 〇 CO U1 oo 03 办 to tSD to w o »—· Ui Οϊ (Ο ο to QO &gt;11 一 3 to s at cn s cn s cn oo s oo -a o ao S ? s cn ιο ο c-&gt; ο OO S i 1 sr cn 0 r? «c^ 〇 热 m to uv 1 雲 薷 m 贍 澈 I I 窃 兹 m 1 碘 藝 Π ◎ ◎ ◎ ◎ ◎ l&gt; t&gt; 1&gt; X ◎ X X P ο o &lt;T&gt; o OQ DO 〇 Di O 0¾ ro s K5 Cn •JU. 〇 i-u μ «ο 05 -ο CJ1 g li ir 〇% o 0 容 1 CO :l m 撖 谉 贘 籠 議 谇 量 m i 議 11 ◎ ◎ ◎ ◎ © ◎ E&gt; &gt; &gt; X X X X P ◎ ◎ ◎ | | ◎ ◎ ◎ &gt; Ο t&gt; X X X X 1Zhao Μ 2 — Suspect Μ SH a «-η km M pet &lt; -H km ss pet« -4 yi • Η m Μ pet L- «-H- • k 赙 Ί &amp; s — K 磡 pet * m4 η pet «U η · pet Um U3 Sf pet s 3 stupid 1 ikm '〇00: ι ο -sJ k 耋 r &gt; &gt; u σ» n 艚 Ά m r &gt; • ft mm is rs u »cn h: 雠 mmn u &gt; &lt; Ta mm 3BT o Ud CD 雎 趸 o U9 cn such as butterfly Μ m ο U) Cn such as 煳 麕 ο w cn Khan 33P painting &gt; · to ff &gt; Μ »&gt; ii yu S IU &gt; 锄 cageam u &gt; N? ή m Μ 3fe m u &gt; tr 鳓 CO 00 Section 堋 Μ Μ JL ·. Uw such as mm pet m cn + rm Ά 3 &amp; m * u &gt; 螓 s &amp; 2r _ 〇 如 锄 a? _ u »ΙΟ 茌» pet m tc ¾ m since m ο? F «Ρ _ to 5S5P S m — li 3S 〇〇09 〇oso 〇o private oooo Ο ο oooo 2 〇O oo Ο 2 Ο os tn Ο 2 Ο Ο Ο s tn ooso makes iV stupid Π _〇Oi o CTi to o CT4 o cn to ο σ &gt; Κ5 0 01 cc o on to o cr &gt; Ο σ &gt; o S Ο ατ &gt; fO Ο tn Ο o cri σ · to Ο tU to o Private to 〇to O «〇Ο« XV ΙΟ o to o Uft. CO o Office Cv5 ο ▲ o iCW to ο to Ο (ftW to ro 0Λ mec Ο Ο oooo Ni oo to ο ο to oo ro oo to 〇〇ΙΌ ο ο «S3 oo u &gt; Ο ο Is3 Ο ο uo § -σ Ο ο ο σ &gt; oo σ» oo Cfi oos ο ο σ σι oosoos 〇os Ο Ο σ »oo cn Ο ο α &gt; σ ο &lt; η oos uo ο σ &gt; o 〇 &gt; oa * ·» CD o A, cn ο Ο ϊ o office cn o office cn o cn ο 09W σ &gt; o Οο U. σι Ο U3 Ο o cs ro o ο Ν &gt; σο o ΝΪ 00 〇to Οϋ o to 〇〇ο Γ〇οο o to 00 o to oo o to «ρ to 0〇o% ο w α &gt; ο bosa; ο ο αα ο 〇soosoo 〇ο S oo oo ooooo ο S ο | 〇o t-0 ο ο g JO ο ΓΌ oo to C / J cr ο private oo o 2 u &gt; oo tn ο ο oosoo Cn »-» oso ο ζ oos ο ο Cn — Ο Ο S ooof ρ S oooo tn Eight O K3 ο ο tc osoo to A os ο os os Ο Ο ο ο ro og ο ο ο υη oo &lt; 〇tn • oo tc cn 〇〇to cri ο ο cn oo N5 tn os til oo tc tXi ο ο to &lt; J &gt; ooo ο ο to tn ο ο o N5 &gt;-ο ο ο oooo § o O os ο g ci 0 1 oo S oooo s ο ο S ο oo Ο Ο ο to ο σ ο ο ooo se oo ο ο tn &lt; ο ο ο ooo — ooo — * _ 67 200303929 玖, Description of the invention Table 17 Chemical composition and corrosion resistance of the fusion metal of the opposite fusion joint (No. 2) mas 1 钭 m (iS S—00 -Η · m Nirvana &lt; —1 • St Zhongcn material as tn material m * mU material ms pet &lt; -H CO m window — ro 钭 雠 S Μ cf »4w cage (« 1 U »SP cage C- * CO f? t—! S · -Η- 涩 m tr &gt; oo M · m pet ο -J pieces m 涩 m ο« D »σ% ¥ cmmo 卅m periodο w bell msm 〇CO CTi oblique m ο u &gt; cn 钭 wmm r &gt; LO crv oblique 丨 Youdi S cn 卄 mmm S o 茌 η m to defend m II oblique S CO .Speaking 丨 w_ u &gt; to • η «?« e «Λ &gt; — • H _ CP oc ΜΜΜ at mm M /« β Μ Oi card! · m mi 4 * ι &gt; N ** · ΰ NiMMt vU ^ 料 醺 03 N3 Sweat_ to 钭 m .Lian &gt; ^ Λ _ W ff _ i cagets3 cr »to cn to private UD to to 0¾ U &gt; to 〇J £ &gt; ts &gt; p CO to -ap ►— · Ν3 ρ cn u &gt; ί — · To to i &gt;-i i S y * CO ca cn CO cn u &gt; — oo ►— · ΟΛ cn Ο CO cn o W &gt; Oi 〇u »pi o ο CD 〇 &gt; cn o α» ο cn Ο cn 〇to Crt jr &gt; σ &gt; V -4 CO U3 oo ID CO • ^ 4 UX 〇CO U1 oo 03 to tSD to wo »— · Ui Οϊ (Ο ο to QO &gt; 11 one 3 to s at cn s cn s cn oo s oo -ao ao S? S cn ιο ο c- &gt; ο OO S i 1 sr cn 0 r? «C ^ 〇 heat m to uv 1 cloud 薷 m 赡 CHEII II 兹兹 m 1 iodine art Ⅱ ◎ ◎ ◎ ◎ ◎ l &gt; t &gt; 1 &gt; X ◎ XXP ο o &lt; T &gt; o OQ DO 〇Di O 0¾ ro s K5 Cn • JU. 〇iu μ «ο 05 -ο CJ1 g li ir 〇% o 0 Capacity 1 CO: lm 撖 谉 贘谇 mi mi 11 ◎ ◎ ◎ ◎ © ◎ E &gt; &gt; &gt; XXXXP ◎ ◎ ◎ | | ◎ ◎ ◎ &gt; 〇 t &gt; XXXX 1

68 200303929 玖、發明說明 說明表16、表17所示之比較例炫接接頭J1〜J4及本 發明之熔接接頭J11〜J19之耐硫酸性、耐鹽酸性。 比較例J1為軟鋼與軟鋼用熔接材料之熔接接頭，由 於母材及熔接金屬之Cu、Ni、Sb在本發明之範圍外，故 5 耐硫酸性及耐鹽酸性較本發明例J11〜J19差，且任一條件 均顯示熔接部之選擇腐蝕。68 200303929 发明. Description of the invention The comparative examples shown in Tables 16 and 17 show the sulfuric acid resistance and hydrochloric acid resistance of the splice joints J1 to J4 and the fusion splice joints J11 to J19 of the present invention. Comparative example J1 is a fusion joint of mild steel and a fusion material for mild steel. Since Cu, Ni, and Sb of the base material and the fusion metal are outside the scope of the present invention, 5 the sulfuric acid resistance and the hydrochloric acid resistance are inferior to the examples J11 to J19 of the present invention , And either condition shows selective corrosion of the weld.

比較例J2為由Cu—Cr系之耐硫酸性鋼與Cu系之熔 接金屬所構成之熔接接頭，由於母材及熔接金屬之Ni、 Sb在本發明之範圍外，故較本發明例J21〜J29差。 10 比較例J3為由比較鋼A2與在本發明範圍内之溶接 金屬W3所構成之熔接接頭，由於母材中之Mo在本發明 之範圍外，故母材部之耐鹽酸性差，而顯示選擇腐蝕。因 此，較本發明例J11〜J19差。Comparative example J2 is a welded joint composed of Cu-Cr-based sulfur-resistant steel and Cu-based welded metal. Since Ni and Sb of the base material and the welded metal are outside the scope of the present invention, it is more than the present invention J21 ~ J29 is bad. 10 Comparative example J3 is a welded joint composed of comparative steel A2 and the weld metal W3 within the scope of the present invention. Since Mo in the base material is outside the scope of the present invention, the base material has poor hydrochloric acid resistance, so it shows the choice. corrosion. Therefore, it is inferior to the examples J11 to J19 of the present invention.

比較例J14為由本發明鋼C36與熔接金屬係W2所構 15 成之溶接金屬，故财硫酸性及对鹽酸性較本發明例 J11〜J19差，且任一酸均顯示熔接部之選擇腐蝕。 本發明例之熔接接頭J11〜J19由於母材及熔接金屬之 化學成份在本發明之範圍内，且母材及熔接金屬之AI或 EI在本發明之範圍内，故可知耐硫酸性及耐鹽酸性優異 20 〇 本發明例J11〜J13由於I ΛΑΙ I或I ΔΕΙ I超過20 ，故腐钱速度較比較例J1〜J4低，但仍顯示選擇腐#之傾 向。另一方面，本發明例J14〜J19由於| ΔΑΙ |或| ΔΕΙ |在20以下，故不視為選擇腐蝕，而較J11〜J13更優異 69 200303929 玖、發明說明 Ο 本發明例J17〜J19係顯示熔接接頭受到Cr添加量之 影響者。與鋼同樣地若將Cr量限定為〇1%以下，可庐得 最優異之耐鹽酸性及耐硫酸性。又，當添加Cr量接近本 5發明之上限（〇·5% )時，Cr稍微阻礙耐蝕性，但相對於 比較例J1〜J4具有優異之耐餘性。 由該等實施例可明瞭，藉於熔接金屬含有特定之Cu 、Ni、Sb，並限定為雜f元素之p、s，炼接金屬部之^ _ 鹽酸性及熔接接頭之耐鹽酸性較軟鋼熔接金屬改善件 10以上，較習知之耐硫酸性鋼用之熔接材料改善3倍以上， 且耐硫酸性亦為軟鋼熔接材料之8倍以上，而在不損害熔 接施工性下，可獲得較習知之耐硫酸性鋼用溶接材料具有 同等以上之優異之耐蝕性。 即，本發明之熔接接頭在硫酸露點腐蝕及/或鹽酸露 15點腐蝕產生之低溫腐蝕環境具有優異之耐蝕性。 依本發明，彳獲得具有含極優異之财鹽酸露點腐# · 性及氣化物之耐酸性，且耐硫酸露點腐蚀性亦優異之鋼。 因此’作為在火力發電廠、自用發電施設、各種一般產業 廢棄物處理施設中，曝露於燃燒排氣氣體，而產生嚴重之 2〇鹽酸及/或硫酸露點腐蚀之煙自、煙道、熱交換器、殼體 、膨脹用材料，可有經濟效益地提供具有優異之耐久性， 且使裝置壽命延長或減少維持管理之鋼。 依本么曰月’可經濟效益地提供顯示對使用鹽酸或硫 酸之酸洗設備之鋼製浴槽用途具有優異之耐触性之熔接構 70 200303929 玖、發明說明 造用鋼。 又’本發明可輕易且廉價地提供具有極優異之耐鹽 酸性及财硫酸性之溶接接頭。 【圖式簡單說明】 5 第1圖係顯示涉及Cu — Sb系鋼之耐鹽酸性之M〇添 加量之影響者。 第2圖係顯示涉及Cu— sb系鋼之耐硫酸性之添 加量之影響者。 第3圖係模式地顯示涉及c—cu — Mo系鋼之耐硫酸 10 性之C、Mo添加量之影響者。 第4圖係顯示涉及Cu_M〇系鋼之耐硫酸性界限 量線之Sb量之影響者。 第5圖％顯示涉及cu 一]y[〇 — Sb系鋼之耐鹽酸性之s 添加量之影響者。 15 第6圖係顯示Cu — Mo—Sb系鋼之AI值與硫酸中腐 蝕速度之關係者。 第7圖係顯示Cu —Mo — Sb系鋼之EI值與硫酸中腐 蝕速度之關係者。 第8圖係顯示本發明鋼及比較鋼在鹽酸酸洗槽之板 20厚減少量之過程變化者。 第9圖係顯示本發明鋼及比較鋼在廢棄物焚化施設 之排煙裝置之腐餘速度者。 第圖係顯示本發明熔接接頭之| ΔΑΙ |與母材及 熔接金屬之硫酸中腐蝕速度之關係者。 200303929 玖、發明說明 第11圖係顯示本發明熔接接頭之|ΔΕΙ丨與母材及 k接金屬之硫酸中腐餘速度之關係者。 第12 (a)圖係顯示用以判定熔接金屬之耐蝕性之腐 _ 蝕試驗片之選取要領者。 第12 ( b )圖係顯示用以判定炼接金屬之耐餘性之腐 韻試驗片之選取要領之第12 (a)圖之x-x，截面圖。 第13圖係顯示用以判定熔接接頭部之耐蝕性之腐蝕 域驗片之選取要領者。 鲁 ί®式之主要元件代表符號表】 1···試片 2· · 接金屬 3···普通鋼母材 4.··底塾層 5···腐钱試片 6···熔接金屬 7…母材 72Comparative example J14 is a weld metal composed of the steel C36 of the present invention and the weld metal system W2. Therefore, its sulfuric acid and hydrochloric acid properties are inferior to those of the examples J11 to J19 of the present invention, and any acid shows selective corrosion of the weld. The welded joints J11 to J19 of the examples of the present invention have the chemical composition of the base material and the weld metal within the scope of the present invention, and the AI or EI of the base material and the weld metal are within the scope of the present invention. Excellent performance 20 〇 In the examples J11 to J13 of the present invention, since I ΔΑΙ I or I ΔΕΙ I exceeds 20, the rate of money corruption is lower than that of the comparative examples J1 to J4, but the tendency to choose rot # is still shown. On the other hand, examples J14 to J19 of the present invention are not considered selective corrosion because | ΔΑΙ | or | ΔΕΙ | is less than 20, and are more excellent than J11 to J13. 69 200303929 发明 Description of the invention 〇 Examples J17 to J19 It shows that the weld joint is affected by the amount of Cr added. When the amount of Cr is limited to 0.01% or less like steel, the most excellent hydrochloric acid and sulfuric acid resistance can be obtained. When the amount of Cr added is close to the upper limit (0.5%) of the present invention, Cr slightly inhibits the corrosion resistance, but it has superior margin resistance compared to Comparative Examples J1 to J4. It can be understood from these examples that by welding the metal containing specific Cu, Ni, and Sb, and limited to p, s of the hetero-f element, the metallurgy of the metallurgy part and the hydrochloric acid resistance of the welded joint are softer than steel Welding metal improvement parts are more than 10, which is more than 3 times better than the conventional welding materials for sulfuric acid resistant steel, and the sulfuric acid resistance is more than 8 times that of soft steel welding materials. The known welding material for sulfuric acid resistant steel has excellent corrosion resistance equivalent to or more than that. That is, the welded joint of the present invention has excellent corrosion resistance in a low-temperature corrosion environment generated by sulfuric acid dew point corrosion and / or hydrochloric acid dew 15 point corrosion. According to the present invention, a steel having extremely excellent properties of hydrochloric acid dew point rot and acidity, and gaseous acid resistance, and sulfuric acid dew point corrosion resistance is also obtained. Therefore, as a thermal power plant, self-use power generation facility, and various general industrial waste treatment facilities, it is exposed to combustion exhaust gas, which produces severe 20% hydrochloric acid and / or sulfuric acid dew point corrosion of smoke, smoke, and heat exchange. The material for the device, casing, and expansion can provide steel with excellent durability, which can prolong the life of the device or reduce maintenance management. According to this article, it is possible to provide a welded structure which exhibits excellent contact resistance to steel bath applications using hydrochloric acid or sulfuric acid pickling equipment. 70 200303929 发明, Description of the invention Steel for manufacturing. The present invention can easily and inexpensively provide a welded joint having excellent salt resistance, acidity, and sulfuric acid properties. [Brief description of the figure] 5 Figure 1 shows the influence of the amount of Mo added to the hydrochloric acid resistance of Cu—Sb based steel. Figure 2 shows the influence of the added amount of sulfuric acid resistance of Cu-sb steel. Figure 3 shows the influence of the amount of C and Mo added on the sulfuric acid resistance of c-cu-Mo steel. Fig. 4 shows the influence of the amount of Sb on the sulfuric acid resistance limit quantity line of Cu_Mo steel. Fig. 5 shows the influence of the amount of s added to the hydrochloric acid resistance of cu a] y [0-Sb steel. 15 Figure 6 shows the relationship between the AI value of Cu—Mo—Sb system steel and the corrosion rate in sulfuric acid. Figure 7 shows the relationship between the EI value of the Cu — Mo — Sb system steel and the corrosion rate in sulfuric acid. Fig. 8 is a graph showing the process change of the thickness reduction of the steel of the present invention and the comparative steel in the hydrochloric acid pickling tank. Fig. 9 shows the residual speed of the steel of the present invention and comparative steel in a smoke exhaust device of waste incineration facilities. The figure shows the relationship between the | ΔΔI of the welded joint of the present invention and the corrosion rate in the sulfuric acid of the base metal and the welded metal. 200303929 发明 Description of the invention Fig. 11 shows the relationship between | ΔΕΙ 丨 of the welded joint of the present invention and the rate of corrosion in the sulfuric acid of the base metal and k-joint metal. Figure 12 (a) shows the selection of corrosion test pieces used to determine the corrosion resistance of welded metals. Figure 12 (b) is a cross-sectional view of x-x of Figure 12 (a), showing the selection method of the corrosion test piece used to determine the remanence of the metal. Fig. 13 shows the selection method of the corrosion field inspection piece for determining the corrosion resistance of the welded joint portion. Table of Symbols of the Main Components of Lu Lu® Type] 1 ··· Test piece 2 ·· Metal 3 ·· Ordinary steel base material 4. ·· Bottom layer 5 ·· Corrupt money test piece 6 ··· Weld Metal 7… Base material 72

Claims (1)

200303929 拾、申請專利範圍 1 · 一種耐鹽酸腐蝕性及耐硫酸腐蝕性優異之低合金鋼，其 特徵在於： 以質量％計含有： c : 0.001 〜0.2% ； Si : 0.01 〜2.5% ； Μη : 〇_1 〜2% ； Cu : 0.1^1% ; Mo : o.ooi〜1% ; Sb : 〇·〇ι〜0.2% ; Ρ : 0.05% 以下； S : 0.05% 以下； 而剩餘部份由Fe及不可避免之雜質構成，且，以下述〈1 〉式求得之耐酸腐蝕性指數AI在0以上。 AI/l〇〇〇〇= 0.0005+〇.〇45x Sb% - C% x Mo% &lt;1&gt; 另，上述「％」係表示「質量％」。 2·—種耐鹽酸腐蝕性及耐硫酸腐蝕性優異之低合金鋼，其 特徵在於： 以質量％計含有： C ·· 0.001 〜0.2% ; Si ·· 0.01 〜2.5% ； Μη : 〇·ΐ〜2% ； Cu : 0.1-1% ; Mo : 0.001 〜1% ； Sb : 〇.〇1 〜0.2% ; 73 200303929 拾、申請專利範圍 p : 0.05% 以下； S : 0.05% 以下； 更含有： Nb : 0.005〜〇.1〇/0 ; 5 Ta : 0.005〜〇·1% ; V : 0.005〜0.1% ; Ti : 0.005〜0.1% ； w : 0.05〜1%中之1種或2種以上； 而剩餘部份由Fe及不可避免之雜質構成，且，以下述〈2 10 〉式求得之耐酸腐蝕性指數EI在〇以上。 ΕΙ/1〇〇〇〇=： 0.0005+ 〇.〇45x Sb°/〇 - C°/〇 χ M〇eq°/〇 (2) 另，上述「％」係表示「質量％」； 上述 Moeq(質量 ％ )係表示 Moeq=Mo+5.1x (Nb°/。+Ta°/〇 ) + 4·2χ V% +9·3χ Ti% +0·5χ 15 3·如申請專利範圍第1項之耐鹽酸腐蝕性及耐硫酸腐蝕性 優異之低合金鋼，其中以質量％計，含有S ·· 0.005超過 〜〇.〇250/0 〇 4.如申請專利範圍第2項之耐鹽酸腐蝕性及耐硫酸腐蝕性 優異之低合金鋼，其中以質量％計，含有S : 〇 〇〇5超過 20 〜0.025% 〇 5·如申請專利範圍第丨項至第4項中任一項之耐鹽酸腐蝕 性及耐硫酸腐蝕性優異之低合金鋼，其中以質量％計，更 含有： Cr · 0· 1 〜〇·5% ; 74 200303929 拾、申請專利範圍 Ni : 0.1 〜1〇/〇 ； N : 0.01 〜0.07% ； A1 : 0.005〜0.1% ； Ca : 0.0002〜0.01% ； 5 Mg ·· 0.0002〜0.01% ； REM : 0.0002〜0·010/〇 ； Β : 0.0002〜0·0050/〇 ；200303929 Patent application scope 1 · A low-alloy steel excellent in hydrochloric acid corrosion resistance and sulfuric acid corrosion resistance, characterized in that it contains: c: 0.001 to 0.2%; Si: 0.01 to 2.5%; Μη: 〇_1 ～ 2%; Cu: 0.1 ^ 1%; Mo: o.ooi ~ 1%; Sb: 〇 · 〇ι〜0.2%; P: 0.05% or less; S: 0.05% or less; Fe and unavoidable impurities are composed, and the acid corrosion resistance index AI calculated by the following <1> formula is 0 or more. AI / 100% = 0.0005 + 0.005 x Sb%-C% x Mo% &lt; 1 &gt; The above "%" means "mass%". 2 · —A low-alloy steel excellent in hydrochloric acid corrosion resistance and sulfuric acid corrosion resistance, which is characterized by containing: C ·· 0.001 to 0.2%; Si ·· 0.01 to 2.5%; Μη: 〇 · ΐ ~ 2%; Cu: 0.1-1%; Mo: 0.001 ~ 1%; Sb: 0.001 ~ 0.2%; 73 200303929 Patent application scope p: 0.05% or less; S: 0.05% or less; more: Nb: 0.005 ~ 〇.1〇 / 0; 5 Ta: 0.005 ~ 〇 · 1%; V: 0.005 ~ 0.1%; Ti: 0.005 ~ 0.1%; w: One or more of 0.05 ~ 1%; The remaining portion is composed of Fe and unavoidable impurities, and the acid corrosion resistance index EI obtained by the following formula <2 10> is 0 or more. ΕΙ / 1〇〇〇〇〇 =: 0.0005+ 〇45 × Sb ° / 〇- C ° / 〇χ M〇eq ° / 〇 (2) In addition, the above "%" means "mass%"; the above Moeq ( Mass%) means Moeq = Mo + 5.1x (Nb ° /.+ Ta ° / 〇) + 4 · 2χ V% + 9 · 3χ Ti% + 0 · 5χ 15 3 Low-alloy steel with excellent hydrochloric acid corrosion resistance and sulfuric acid corrosion resistance, in which, in terms of mass%, it contains S. 0.005 more than ~ .250 / 0 〇4. The hydrochloric acid corrosion resistance and resistance such as the item 2 of the scope of patent application Low-alloy steel with excellent sulfuric acid corrosion resistance, which contains S: 0.0005 in excess of 20 to 0.025% in terms of mass%. Hydrochloric acid corrosion resistance as described in any one of claims 1-4 And low-alloy steel with excellent sulfuric acid corrosion resistance, which, in terms of mass%, further contains: Cr · 0 · 1 ~ 0 · 5%; 74 200303929, patent application scope Ni: 0.1 ~ 1〇 / 〇; N: 0.01 ~ 0.07%; A1: 0.005 ~ 0.1%; Ca: 0.0002 ~ 0.01%; 5 Mg ·· 0.0002 ~ 0.01%; REM: 0.0002 ~ 0 · 010 / 〇; Β: 0.0002 ~ 0 · 0050 / 〇; La : 0.0002〜0·01°/〇 ； Ce : 0.0002〜0.01% ； 10 Sn ·· 0.01 〜0.3% ； Pb : 0.01 〜0.3% ； Se : 0.001 〜0.1% ； Te : 0.001 〜0.1% ； Bi : 0.001 〜0.1〇/〇 ； 15 Ag ·_ 0.001 〜0.5% ；La: 0.0002 ~ 0 · 01 ° / 〇; Ce: 0.0002 ~ 0.01%; 10 Sn ·· 0.01 ~ 0.3%; Pb: 0.01 ~ 0.3%; Se: 0.001 ~ 0.1%; Te: 0.001 ~ 0.1%; Bi: 0.001 ~ 0.1〇 / 〇; 15 Ag · _ 0.001 ~ 0.5%; Pd : 0.001〜0.1%中之1種或2種以上。 6. —種耐鹽酸腐蝕性及耐硫酸腐蝕性優異之低合金鋼之熔 接接頭，其特徵在於： 其係由母材及熔接金屬構成； 20 該母材係以質量％計含有·· C : 0.001 〜0.2% ； Si : 0.01 〜2·50/〇 ； Μη : 0.1 〜2〇/〇 ； Cu : 0.1 〜1% ； 75 200303929 拾、申請專利範圍 Mo : 0.001 〜10/〇 ; Sb : 0·0卜0.2% ； P : 0.05% 以下； S : 0.05% 以下； 5 而剩餘部份由Fe及不可避免之雜質構成者； 該熔接金屬係以質量％計含有： C : 0.005〜0.2% ；Pd: One or more of 0.001 to 0.1%. 6. —A welding joint of low alloy steel with excellent resistance to hydrochloric acid and sulfuric acid, characterized in that it is composed of a base material and a welded metal; 20 The base material contains in mass%. C: 0.001 ~ 0.2%; Si: 0.01 ~ 2 · 50 / 〇; Mn: 0.1 ~ 2〇 / 〇; Cu: 0.1 ~ 1%; 75 200303929 Patent application scope Mo: 0.001 ~ 10 / 〇; Sb: 0 · 0 0.2%; P: 0.05% or less; S: 0.05% or less; 5 and the remainder is composed of Fe and unavoidable impurities; the weld metal is contained in mass%: C: 0.005 ~ 0.2%; Si : 0.01 〜2.5% ； Μη : 0.1 〜20/〇 ； 10 Cu : 0.1 〜1% ； Mo : 0.001 〜0.5% ； Sb ·· 0.01 〜0.2% ； P : 0.03% 以下； S : 0.03% 以下； 15 而剩餘部份由Fe及不可避免之雜質構成者；Si: 0.01 to 2.5%; Μη: 0.1 to 20 / 〇; 10 Cu: 0.1 to 1%; Mo: 0.001 to 0.5%; Sb ·· 0.01 to 0.2%; P: 0.03% or less; S: 0.03% or less; 15 and the remainder is composed of Fe and inevitable impurities; 且，前述母材及熔接金屬之以下述〈1〉式电 ^ . / %永得之耐酸腐 蝕性指數AI在0以上。 AI/10000- 0.0005 +〇.〇45x Sb°/〇 - C°/〇 x Mo% 〇〉 另，上述「％」係表示「質量％」。 20 7·如申請專利範圍第6項之耐鹽酸腐蝕性及耐硫酸腐蝕性 優異之低合金鋼之熔接接頭，其中前述母材與熔接金屬之 耐酸腐钮性指數AI之差分絕對值I ΛΑΙ |在20以下， 另，I ΔΑΙ | = | ΑΙ (母材）—ΑΙ (熔接金屬）| 。 8·如申請專利範圍第6項之耐鹽酸腐蝕性及耐硫酸腐蝕性 76 200303929 拾、申請專利範圍 優異之低合金鋼之熔接接頭，其中前述母材以質量％計含 有S : 0.005超過〜0·025% ，而前述熔接金屬以質量％計含 有 S : 0.005 超過〜0.02%。 9.如申清專利範圍第7項之耐鹽酸腐蝕性及耐硫酸腐蝕性 5 優異之低合金鋼之熔接接頭，其中前述母材以質量％計含 有S · 0.005超過〜0.025% ，而前述熔接金屬以質量％計含 有 S · 0.005 超過〜0.02%。 10·如申請專利範圍第6項之耐鹽酸腐蝕性及耐硫酸腐蝕性 優異之低合金鋼之熔接接頭，其中前述母材以質量％計更 10 &amp;有Ν. 0.001〜0.007% ，而前述溶接金屬以質量％計更含 有 Ν : 0.001 〜〇·〇2〇/0 〇 11 ·如申請專利範圍第7項之耐鹽酸腐蝕性及耐硫酸腐蝕性 優異之低合金鋼之熔接接頭，其中前述母材以質量％計更 含有Ν : 0.001〜0.007% ，而前述熔接金屬以質量％計更含 15 有 Ν : 0.001 〜0.02% 。 12.如申請專利範圍第8項之耐鹽酸腐蝕性及耐硫酸腐蝕性 優異之低合金鋼之熔接接頭，其中前述母材以質量％計更 含有Ν : 0.001〜0.007% ，而前述熔接金屬以質量％計更含 有 Ν : 0.001 〜0.02%。 20 13·如申請專利範圍第9項之耐鹽酸腐蝕性及耐硫酸腐蝕性 優異之低合金鋼之熔接接頭，其中前述母材以質量％計更 含有N :0.001〜0.007% ，而前述熔接金屬以質量％計更含 有 Ν : 0.001 〜〇.〇20/0 〇 14· 一種耐鹽酸腐蝕性及耐硫酸腐蝕性優異之低合金鋼之熔 77 200303929 拾、申請專利範圍 接接頭’其特徵在於. 其係由母材及熔接金屬所構成； 該母材係以質量％計含有： C : 0.001 〜0.2% ； 5 Si : 0.01 〜2.5% ； Μη : 0.1 〜2% ； Cu : 0·1 〜1% ； Mo ： 0.001-1% ； Sb : 0·01 〜0·20/〇 ； 10 Ρ : 0.05% 以下； S : 0.05% 以下； 更含有： Nb : 0.005〜0.1% ； Ta : 0.005〜0.1% ； 15 V : 0.005〜0.1% ; Ti : 0.005〜0·”/〇 ； W : 0.05〜1%中之1種或2種以上，而剩餘部份由Fe及不 可避免之雜質構成者； 該熔接金屬係以質量％計含有·· 20 C : 0.005〜0·20/〇 ； Si : 0.01 〜2·50/〇 ； Μη ·· 0.1 〜2% ； Cu ·· 0.1 〜10/〇 ； Mo : 0.001 〜0·50/〇 ； 200303929 拾、申請專利範圍 sb ·· 0.01 〜0.2% ; P : 0·03% 以下； S : 0.03% 以下； 更含有： 5 Nb : 0.005〜0.1% ; Ta · 0.005-0.1% ; V : 0.005-0.1% ; Ti ： 0.005-0.1% ; W · 〇·〇5 1/◦中之1種或2種以上，而剩餘部份由Fe及不 1〇可避免之雜質構成者；且，前述母材及炫接金屬之以下述 〈2〉式求得之耐酸腐蝕性指數EI在〇以上。 EI/l〇〇〇〇= 0.0005 + 0.〇45x Sb% ~ C% x Moeq〇/0 &lt;2&gt; 另，上述「％」係表示「質量％」； 上述 Moeq(質量 ％ )係表示 M〇eq=Mo+5.1x (Nb% +Ta% ) 15 + 4·2χ V% + 9·3χ Ti% + 〇·5χ W。 15·如申請專利範圍第14項之耐鹽酸腐蝕性及耐硫酸腐蝕 性優異之低合金鋼之熔接接頭，其中前述母材與熔接金屬 之耐酸腐姓性指數ΕΙ之差分絕對值| △ ΕΙ |在20以下， 另，I ΔΕΙ I = | ΕΙ (母材）一 ΕΙ (熔接金屬）| 。 20 16·如申请專利範圍第14項之耐鹽酸腐银性及耐硫酸腐蚀 性優異之低合金鋼之熔接接頭，其中前述母材以質量％計 含有S : 0.005超過〜〇·〇25% ，前述熔接金屬以質量％計含 有 S : 0.005 超過〜0.02% 。 17.如申請專利範圍第15項之耐鹽酸腐蝕性及耐硫酸腐蝕 79 200303929 拾、申請專利範圍 性優異之低合金鋼之熔接接頭，其中前述母材以質量％計 含有S : 0.005超過〜0.025% ，前述熔接金屬以質量％計含 有 S : 0.005 超過〜0.02% 。 18.如申請專利範圍第Η項之耐鹽酸腐蝕性及耐硫酸腐蝕 5 性優異之低合金鋼之熔接接頭，其中前述母材以質量。/◦計 更含有N· 0.001〜0.007% ’而前述溶接金屬以質量％計更 含有 N ·· 0.001 〜0.02%。 19·如申請專利範圍第丨5項之耐鹽酸腐蝕性及耐硫酸腐蝕 性優異之低合金鋼之炫接接頭，其中前述母材以質量％計 10 更含有N : 0.001〜0.007% ，而前述熔接金屬以質量％計更 含有 N ·· 0.001 〜0.02%。 20.如申請專利範圍第16項之耐鹽酸腐蝕性及耐硫酸腐蝕 性優異之低合金鋼之溶接接頭’其中前述母材以質量％計 更含有N : 0.001〜0.007% ，而前述熔接金屬以質量％計更 15 含有 N : 0.001 〜0.02% 。 21 ·如申請專利範圍第17項之财鹽酸腐姓性及耐硫酸腐|虫 性優異之低合金鋼之熔接接頭，其中前述母材以質量％計 更含有N : 0.001〜0.007% ，而前述熔接金屬以質量％計更 含有 N : 0.001 〜0.02% 。 20 22·如申請專利範圍第6項〜第21項中任一項之耐鹽酸腐餘 性及耐硫酸腐蝕性優異之低合金鋼之炫接接頭，其中前述 母材及熔接金屬以質量％計更含有： Cr : 0.1 〜0.5% ； Ni : 0.1 〜1% ; 80 200303929 拾、申請專利範圍 A1 : 0.005〜0.1% ； Ca : 0.0002〜0.01% ； Mg : 0.0002〜0.01% ； REM : 0.0002〜0.01% ； 5 B : 0.0002〜0.005% ； La : 0.0002〜0.01% ； Ce : 0.0002〜0.01% ；In addition, the above-mentioned base material and welded metal have an acid corrosion resistance index AI above 0 according to the following <1> formula ^. /%. AI / 10000- 0.0005 + 〇.〇45x Sb ° / 〇-C ° / 〇 x Mo% 〇> The above "%" means "mass%". 20 7 · If the weld joint of low alloy steel with excellent hydrochloric acid corrosion resistance and sulfuric acid corrosion resistance in item 6 of the scope of patent application, the absolute absolute difference I ΛΑΙ of the acid corrosion resistance button index AI of the aforementioned base metal and weld metal | Below 20, I ΔΑΙ | = | ΑΙ (base metal)-ΑΙ (welded metal) |. 8 · For the hydrochloric acid corrosion resistance and sulfuric acid corrosion resistance of item 6 in the scope of patent application 76 200303929 Pick up and weld joints of low alloy steel with excellent patent scope, in which the aforementioned base material contains S by mass%: 0.005 exceeds ~ 0 · 025%, and the aforementioned weld metal contains S in a mass% of more than 0.005% and more than 0.02%. 9. According to claim 7 of the scope of patent application, hydrochloric acid corrosion resistance and sulfuric acid corrosion resistance 5 Excellent low alloy steel welding joints, in which the aforementioned base metal contains S in a mass% of 0.005 to more than 0.025%, and the aforementioned welding The metal contains S in an amount of 0.005 or more in an amount of more than ~ 0.02%. 10 · If the welded joint of low alloy steel with excellent hydrochloric acid corrosion resistance and sulfuric acid corrosion resistance is excellent in the scope of patent application No. 6, the aforementioned base material is more than 10% by mass. &Amp; Ν. 0.001 ~ 0.007%, and the foregoing The welded metal contains N: 0.001 to 0.002 / 0 〇11 in mass%. For example, the weld joint of low alloy steel with excellent hydrochloric acid corrosion resistance and sulfuric acid corrosion resistance as described in item 7 of the patent application scope, wherein The base material further contains N: 0.001 to 0.007% by mass%, and the aforementioned fusion metal further contains 15: 0.001 to 0.02% by mass%. 12. The weld joint of low alloy steel with excellent hydrochloric acid corrosion resistance and sulfuric acid corrosion resistance as described in the scope of the patent application No. 8, wherein the aforementioned base material further contains N: 0.001 to 0.007% by mass%, and the aforementioned welded metal is The mass% further contains N: 0.001 to 0.02%. 20 13 · If the weld joint of low alloy steel with excellent hydrochloric acid corrosion resistance and sulfuric acid corrosion resistance is in accordance with item 9 of the scope of the patent application, the aforementioned base metal further contains N: 0.001 to 0.007% by mass%, and the aforementioned welded metal In terms of mass%, it also contains N: 0.001 to 〇20 / 0 〇14. A low alloy steel with excellent resistance to hydrochloric acid corrosion and sulfuric acid corrosion 77 200303929 Pick up and apply for patent scope connector 'It is characterized by. It is composed of a base material and a weld metal; the base material contains in mass%: C: 0.001 to 0.2%; 5 Si: 0.01 to 2.5%; Μη: 0.1 to 2%; Cu: 0 · 1 to 1 %; Mo: 0.001-1%; Sb: 0.01 to 0.20 / 〇; 10P: 0.05% or less; S: 0.05% or less; Nb: 0.005 to 0.1%; Ta: 0.005 to 0.1% 15 V: 0.005 ~ 0.1%; Ti: 0.005 ~ 0 · "/ 〇; W: One or two or more of 0.05 ~ 1%, and the remainder is composed of Fe and unavoidable impurities; the welding The content of the metal system is 20% by mass: 20 C: 0.005 to 0.20 / 〇; Si: 0.01 to 2.50 / 〇; Μη · · 0.1 to 2%; Cu ·· 0.1 to 10 / 〇; Mo: 0.001 to 0 · 50 / 〇; 200303929; Patent application scope sb · 0.01 to 0.2%; P: 0.03% or less; S: 0.03 % Or less; more: 5 Nb: 0.005 ~ 0.1%; Ta · 0.005-0.1%; V: 0.005-0.1%; Ti: 0.005-0.1%; W · 〇 · 〇5 1 / ◦ 1 or 2 Those with more than one kind, and the remaining part consisting of Fe and unavoidable impurities; and the acid corrosion resistance index EI obtained by the following <2> formula of the aforementioned base metal and dazzling metal is above 0. EI / l〇〇〇〇 = 0.0005 + 0.045 x Sb% ~ C% x Moeq〇 / 0 &lt; 2 &gt; The above "%" means "mass%"; the above Moeq (mass%) means Moq = Mo + 5.1x (Nb% + Ta%) 15 + 4 · 2χ V% + 9 · 3χ Ti% + 0.5χ W. 15 · If the weld joint of low alloy steel with excellent hydrochloric acid corrosion resistance and sulfuric acid corrosion resistance is in accordance with item 14 of the scope of the patent application, the absolute absolute value of the acid corrosion resistance surname index EI of the base metal and the weld metal is different | △ ΕΙ | Below 20, I ΔΕΙ I = | ΕΙ (base metal)-ΕΙ (welded metal) |. 20 16 · If the weld joint of low alloy steel with excellent hydrochloric acid and silver corrosion resistance and sulfuric acid corrosion resistance in item 14 of the scope of the application for patent, wherein the aforementioned base material contains S in a mass% of 0.005 to 0.255%, The aforementioned weld metal contains S in an amount of 0.005 by mass of more than 0.02%. 17. For example, hydrochloric acid corrosion resistance and sulfuric acid corrosion resistance in item 15 of the scope of patent application 79 200303929. Welding joints of low alloy steel with excellent scope of patent application, in which the aforementioned base material contains S by mass%: 0.005 exceeds ~ 0.025 %, The above-mentioned weld metal contains S in a mass% of 0.005 and exceeds 0.02%. 18. The weld joint of low alloy steel with excellent resistance to hydrochloric acid corrosion and sulfuric acid corrosion according to item (1) of the scope of patent application, wherein the aforementioned base material is based on quality. / ◦ It further contains N · 0.001 to 0.007% ', and the aforementioned weld metal further contains N ·· 0.001 to 0.02% by mass%. 19. · The dazzle joint of low alloy steel with excellent hydrochloric acid corrosion resistance and sulfuric acid corrosion resistance according to item 5 of the patent application scope, wherein the aforementioned base material is 10% by mass and further contains N: 0.001 to 0.007%, and the foregoing The weld metal contains N more than 0.001 to 0.02% in mass%. 20. For example, the weld joint of low alloy steel having excellent hydrochloric acid corrosion resistance and sulfuric acid corrosion resistance according to item 16 of the scope of the patent application, wherein the aforementioned base material contains N: 0.001 to 0.007% by mass%, and the aforementioned welded metal is 15% by mass contains N: 0.001 to 0.02%. 21 · For the weld joint of low-alloy steel with excellent acid resistance and sulfuric acid rot resistance and insect resistance, such as the item No. 17 in the scope of the patent application, wherein the aforementioned base material contains N: 0.001 to 0.007% by mass%, and the foregoing The weld metal contains N: 0.001 to 0.02% in mass%. 20 22 · The dazzle joint of low alloy steel with excellent resistance to hydrochloric acid residue and sulfuric acid, as described in any of the items 6 to 21 of the scope of the patent application, wherein the aforementioned base metal and weld metal are based on mass% It also contains: Cr: 0.1 ~ 0.5%; Ni: 0.1 ~ 1%; 80 200303929. Patent application scope A1: 0.005 ~ 0.1%; Ca: 0.0002 ~ 0.01%; Mg: 0.0002 ~ 0.01%; REM: 0.0002 ~ 0.01 %; 5 B: 0.0002 ~ 0.005%; La: 0.0002 ~ 0.01%; Ce: 0.0002 ~ 0.01%; Sn : 0.01 〜0.3% ； Pb : 0.01 〜0.3% ； 10 Se : 0.001 〜0.1〇/〇 ； Te : 0.001 〜0.1% ； Bi : 0.001 〜0.1% ； Ag : 0.001 〜0·50/〇 ； Pd : 0.001〜0.1%中之1種或2種以上。 15Sn: 0.01 to 0.3%; Pb: 0.01 to 0.3%; 10 Se: 0.001 to 0.10 / 〇; Te: 0.001 to 0.1%; Bi: 0.001 to 0.1%; Ag: 0.001 to 0.50 / 〇; Pd: One or more of 0.001 to 0.1%. 15 8181
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